The generator matrix

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

generates a code of length 53 over Z3[X]/(X^2) who´s minimum homogenous weight is 99.

Homogenous weight enumerator: w(x)=1x^0+268x^99+634x^102+430x^105+312x^108+218x^111+182x^114+90x^117+48x^120+2x^126+2x^144

The gray image is a linear code over GF(3) with n=159, k=7 and d=99.
This code was found by Heurico 1.16 in 0.0688 seconds.