The generator matrix

 1  0  0  1  1  1  1  1  0 2X  1  1  1  1  1  0  1  1  1  1  1  1 2X  X  1  0  1  1  1  1  1  1  0 2X  1  1  X  1  X  1  1  1  1  1  X  X  1 2X  1  1  1  1  0  1  1  0  1  1  1 2X  0  X  1  1  1  X  0  1  1 2X  1  1  1  X  1  1 2X 2X  1  1
 0  1  0  1  0  2  1  2  1  1  0 2X+1 2X+2 2X  1 2X  0 X+1 2X+2  1  2  2  1  1 2X  1 X+2 2X 2X X+2 2X+1 2X+1  1 2X  2 2X+1  1  0  1 2X+2  2 2X+2 2X 2X+1  1  1 X+2 2X  0 2X+1  1  X  X 2X+2 2X+1  1 2X 2X+2 2X+2  1  1 2X 2X  X 2X+1  1  1 2X X+1  1  2  1 X+1  1  2  2  1  1  2  1
 0  0  1  2  1  2  1  0  2 2X+1  2 2X 2X+1 2X+1  1  1 X+2  2 X+1  0  X  2  2  1 2X  0 X+1  X X+2 2X  X  1  X  1  2 X+2 X+1 2X+1  2 X+2  0 2X+1 2X 2X+2 2X  2 X+2  1 X+1  1  0 2X  1  0  X  1 X+1  0  2 X+2 2X+1  1  X  2 X+1  X 2X+1  2 X+1 2X+2  2 X+2  1 2X X+2  0 2X X+1  0 2X+2
 0  0  0 2X  0  0  0  0  0  0  0  0 2X  0  0  0  0 2X 2X 2X 2X  X 2X  X 2X  X 2X  X 2X  X  X 2X  0 2X  0 2X 2X  X 2X 2X  X 2X  X  X 2X  X  X  0  0  X  0  X  0 2X  0  X 2X  X  0  X  X  0  X 2X 2X 2X 2X  X 2X  0 2X 2X  X  X  X 2X  0 2X  0 2X
 0  0  0  0 2X  0  0  0  0  0  X 2X  0 2X  0  0  X  0  0  X 2X  0  X 2X 2X 2X  X  X 2X 2X  0 2X 2X 2X  X 2X  0  X  X  0  0  X 2X  X 2X  0  0  X 2X 2X 2X  X  0 2X  X  X  X  X  X  0 2X  X  X  X  X 2X 2X  0  0  X  0  X  0  X 2X  X 2X 2X 2X 2X
 0  0  0  0  0  X  0  X  X 2X  X 2X 2X 2X  X  X 2X  X  0 2X 2X  0  0  0  X  X  0  0  0 2X 2X  0  0 2X  X 2X  X 2X 2X  X  X 2X  X  X  X  0 2X  0  0 2X  X  X  0  X 2X 2X  0  X  0  0 2X  X  0 2X 2X  X  X 2X  0  0  X  X  X  0 2X  0  0  0  X  0
 0  0  0  0  0  0  X  X  X  X  0  0 2X  X  0 2X 2X 2X  X  0 2X  X 2X  0  X 2X  X 2X  X  X  X  0 2X  0 2X  0  X 2X 2X  X 2X  X 2X 2X  0  0  0 2X  X  X  0 2X  X  0  X 2X  0  0  X  X 2X  0  X  X 2X  X  0  X  0 2X  0 2X 2X 2X 2X  0  0 2X 2X 2X

generates a code of length 80 over Z3[X]/(X^2) who´s minimum homogenous weight is 141.

Homogenous weight enumerator: w(x)=1x^0+140x^141+66x^142+126x^143+734x^144+252x^145+372x^146+1492x^147+570x^148+702x^149+2214x^150+1044x^151+1290x^152+3318x^153+1458x^154+1506x^155+4146x^156+1974x^157+2184x^158+4850x^159+2028x^160+1992x^161+4966x^162+2196x^163+1944x^164+4596x^165+1740x^166+1536x^167+3060x^168+1098x^169+948x^170+1898x^171+522x^172+384x^173+876x^174+144x^175+114x^176+284x^177+30x^178+18x^179+96x^180+6x^182+64x^183+30x^186+28x^189+4x^192+6x^195+2x^198

The gray image is a linear code over GF(3) with n=240, k=10 and d=141.
This code was found by Heurico 1.16 in 63.5 seconds.