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  1  1  1  1  1  1  1
 0  X  0  0  0  0  0  0  0  0  0  X  0  X  0  X  0  X  X  X  0  X  X  X  0  X  0  X  X  X  X  X  0  0
 0  0  X  0  0  0  0  0  0  0  X  0  X  0  X  0  X  X  X  0  X  X  X  0  X  X  X  X  X  X  0  0  0  0
 0  0  0  X  0  0  0  X  X  X  X  X  X  X  0  0  X  0  0  X  X  X  X  X  0  0  0  0  X  X  0  0  0  0
 0  0  0  0  X  0  X  X  X  0  0  0  0  0  0  0  X  0  X  X  X  X  0  X  X  0  X  X  X  0  X  X  0  0
 0  0  0  0  0  X  X  0  X  X  0  0  X  X  X  X  X  0  X  X  0  0  0  0  0  X  X  0  X  X  0  X  0  0

generates a code of length 34 over Z2[X]/(X^2) who´s minimum homogenous weight is 32.

Homogenous weight enumerator: w(x)=1x^0+31x^32+64x^34+31x^36+1x^68

The gray image is a linear code over GF(2) with n=68, k=7 and d=32.
As d=32 is an upper bound for linear (68,7,2)-codes, this code is optimal over Z2[X]/(X^2) for dimension 7.
This code was found by Heurico 1.16 in 0.00595 seconds.