The generator matrix

 1  0  1  1  1 X^3+X^2+X  1  1  0  1 X^3+X^2+X  1  1  1  1 X^3  1 X^3+X  1  1  0  1  1 X^3+X  1  1  1 X^2+X  1 X^2  1  1  1 X^2  1  1 X^3+X^2+X  1  1  X  1  1  1  1 X^2+X  1  1 X^2 X^3 X^2  1  0 X^3+X^2 X^3+X^2+X  1  1  1  1 X^3+X^2 X^2 X^3+X  1 X^3 X^3  X  1  1  X X^2+X  1 X^3  1  1  1
 0  1 X+1 X^3+X^2+X X^2+1  1 X^3+X^2+1  0  1 X^3+X^2+X  1 X+1 X^3+1 X^2+X+1 X^3  1 X^3+X  1 X^3+X^2+X+1  0  1  1 X^3+X  1 X^3+X^2+X+1 X^3+X^2+1 X^2  1 X^2+X  1 X+1 X^3+X^2+X X^2+1  1 X^3+X^2+X+1 X^2  1  X  1  1 X^2 X+1  1 X^3+X^2  1 X^2+1 X^2+1  1  1  X X^2+X+1  X  1  1 X^3+X+1 X+1 X^2+1 X^2+1  X  1  1  X  1  1  1 X^2+X X^3+X^2+X+1  1  1 X^3+X^2+X  1 X^2 X^3+X^2 X^3
 0  0 X^2  0  0  0  0 X^2 X^3+X^2 X^3+X^2 X^2 X^3+X^2 X^3 X^2 X^3+X^2 X^2 X^3 X^3 X^2 X^3 X^3 X^3 X^2 X^3+X^2 X^3+X^2 X^2  0 X^2 X^2 X^3  0  0 X^3+X^2 X^3+X^2  0 X^3+X^2 X^3 X^3 X^2  0 X^3 X^3 X^2 X^2 X^2 X^3+X^2 X^3  0 X^2  0 X^3 X^3+X^2 X^2  0  0  0 X^3+X^2 X^2 X^2 X^3+X^2 X^3+X^2 X^2  0 X^3 X^2 X^3 X^3+X^2 X^3 X^2 X^3+X^2  0 X^3 X^3 X^3+X^2
 0  0  0 X^3+X^2 X^3 X^3+X^2 X^2 X^2 X^3+X^2 X^3  0 X^3+X^2  0 X^3  0 X^3 X^3 X^3 X^3+X^2 X^3+X^2 X^3+X^2 X^2 X^2 X^3+X^2 X^2  0 X^3+X^2 X^3+X^2 X^3+X^2 X^2 X^3  0 X^3+X^2 X^3 X^2 X^3 X^3 X^3+X^2 X^3 X^2 X^3  0 X^3+X^2 X^2 X^2 X^2 X^2  0  0 X^3+X^2 X^2  0 X^2 X^3 X^3+X^2  0 X^3 X^3 X^3+X^2  0  0 X^3 X^2 X^3 X^3+X^2  0 X^3 X^3+X^2 X^3 X^3+X^2 X^3 X^2  0 X^3

generates a code of length 74 over Z2[X]/(X^4) who´s minimum homogenous weight is 69.

Homogenous weight enumerator: w(x)=1x^0+68x^69+338x^70+500x^71+555x^72+382x^73+585x^74+344x^75+495x^76+374x^77+273x^78+80x^79+34x^80+36x^81+16x^82+2x^83+2x^85+2x^88+2x^89+3x^90+2x^91+1x^94+1x^100

The gray image is a linear code over GF(2) with n=592, k=12 and d=276.
This code was found by Heurico 1.16 in 0.547 seconds.