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

generates a code of length 70 over Z2[X]/(X^2) who´s minimum homogenous weight is 64.

Homogenous weight enumerator: w(x)=1x^0+121x^64+120x^68+211x^72+8x^76+49x^80+1x^88+1x^128

The gray image is a linear code over GF(2) with n=140, k=9 and d=64.
This code was found by Heurico 1.16 in 10.6 seconds.