The generator matrix

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

generates a code of length 45 over Z3[X]/(X^3) who´s minimum homogenous weight is 87.

Homogenous weight enumerator: w(x)=1x^0+80x^87+150x^88+276x^90+132x^91+6x^93+42x^94+36x^96+4x^105+2x^108

The gray image is a linear code over GF(3) with n=405, k=6 and d=261.
This code was found by Heurico 1.16 in 0.0317 seconds.