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  2  2  2  2  2  2  2  2  2  2  2  2  2  2  1  1  1  1  1  1  1  1  1  1  1  1  4  0  4  0  0  4  8  4  4  4  4  2  2  4  4  4  0  4  4  4  2  4  2  2  2  2  2  8  8  8  4  1  1
 0 12  0 12  0 12  0 12  8  4  8  4  8  4  8  4  0 12  0 12  0 12  0 12  8  4  8  4  8  4  8  4 12 12 12 12  4  0  8  4  0  8  4  4  0  8  0 12  8  4  0 12  8  4  0 12  8  4 12  4 12  4  4  4  4  0  8  4 12  0  8  0  8 12  4  0  8  4 12  4 12  4  4 12  4  4  4  4  8  0 12
 0  0  8  0  0  8  8  8  8  8  8  8  0  0  0  0  0  0  0  0  8  8  8  8  8  8  8  8  0  0  0  0  0  0  8  8  8  0  0  0  8  8  8  0  8  8  0  0  0  0  0  0  0  0  8  8  8  8  0  8  8  0  0  8  8  8  8  0  8  0  0  0  0  0  8  8  8  8  0  0  8  8  0  8  8  8  0  0  0  8  8
 0  0  0  8  8  8  8  0  0  0  8  8  8  8  0  0  0  0  8  8  8  8  0  0  0  0  8  8  8  8  0  0  0  8  8  0  0  8  8  8  0  0  8  0  8  8  0  0  0  0  8  8  8  8  8  8  8  8  8  8  0  0  8  0  8  8  8  8  8  0  0  8  8  0  0  0  0  8  8  0  0  0  8  8  8  0  8  0  0  0  0

generates a code of length 91 over Z16 who´s minimum homogenous weight is 90.

Homogenous weight enumerator: w(x)=1x^0+70x^90+144x^91+4x^92+16x^93+8x^94+3x^96+8x^98+2x^106

The gray image is a code over GF(2) with n=728, k=8 and d=360.
This code was found by Heurico 1.16 in 1.7 seconds.