The generator matrix

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

generates a code of length 23 over Z2[X]/(X^2) who´s minimum homogenous weight is 18.

Homogenous weight enumerator: w(x)=1x^0+58x^18+113x^20+91x^22+93x^24+95x^26+43x^28+9x^30+6x^32+3x^34

The gray image is a linear code over GF(2) with n=46, k=9 and d=18.
This code was found by Heurico 1.16 in 1.23 seconds.