The generator matrix

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

generates a code of length 75 over Z3[X]/(X^2) who´s minimum homogenous weight is 141.

Homogenous weight enumerator: w(x)=1x^0+84x^141+66x^142+96x^143+260x^144+72x^145+96x^146+214x^147+126x^148+108x^149+254x^150+60x^151+66x^152+132x^153+84x^154+36x^155+98x^156+30x^157+36x^158+84x^159+36x^160+36x^161+58x^162+6x^163+12x^164+10x^165+6x^166+6x^168+2x^171+4x^177+4x^180+2x^183+2x^189

The gray image is a linear code over GF(3) with n=225, k=7 and d=141.
This code was found by Heurico 1.16 in 0.144 seconds.