The generator matrix

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

generates a code of length 42 over Z2[X]/(X^4) who´s minimum homogenous weight is 40.

Homogenous weight enumerator: w(x)=1x^0+358x^40+320x^42+336x^44+6x^48+2x^56+1x^64

The gray image is a linear code over GF(2) with n=336, k=10 and d=160.
This code was found by Heurico 1.16 in 11.2 seconds.