The generator matrix

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

generates a code of length 85 over Z2[X]/(X^3) who�s minimum homogenous weight is 78.

Homogenous weight enumerator: w(x)=1x^0+522x^78+1178x^80+1480x^82+1280x^84+1155x^86+933x^88+734x^90+483x^92+252x^94+116x^96+46x^98+5x^100+3x^102+4x^104

The gray image is a linear code over GF(2) with n=340, k=13 and d=156.
This code was found by Heurico 1.16 in 61.5 seconds.