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  2  1  2  2  4  4  0  0  4  2  2  1  2  0  1  2  4  2  0  4  2  2  2  2  1  2
 0  2  0  0  0  0  0  0  0  0  0  0  0  0  4  4  6  6  6  6  6  6  6  6  2  0  4  6  6  2  0  2  2  2  4  2  4  2  2  2  4  0  2  0  2  6  2  2  6  2  2  6  6  4  4  4  0
 0  0  2  0  0  0  0  0  0  0  2  2  6  2  2  2  2  6  2  4  2  0  6  0  6  4  0  4  4  4  2  0  2  2  6  4  4  6  6  0  0  6  0  4  6  6  0  0  2  0  2  4  6  2  2  0  0
 0  0  0  2  0  0  0  2  6  2  4  2  2  0  6  0  0  4  6  2  2  2  0  4  2  2  4  0  0  0  6  6  4  0  4  0  0  2  4  2  4  6  2  6  6  4  0  2  6  6  4  0  0  6  0  0  0
 0  0  0  0  2  0  2  2  2  4  4  4  4  6  2  2  0  0  0  0  2  6  6  2  0  0  4  4  2  6  6  6  2  2  4  2  2  4  0  4  2  6  0  6  4  6  0  4  2  4  6  2  0  4  2  0  0
 0  0  0  0  0  2  2  0  2  6  2  0  2  4  6  2  6  4  2  4  2  0  6  6  0  0  4  2  0  4  4  6  4  2  2  0  6  4  6  0  2  0  6  0  2  4  6  2  0  4  0  2  2  0  2  4  6
 0  0  0  0  0  0  4  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  4  4  4  4  4  4  4  4  4  4  4  4  4  4  4  0  4  4  4  0  4  4  0  4  0  4
 0  0  0  0  0  0  0  4  4  0  0  0  0  0  4  0  0  0  0  0  4  4  4  0  4  4  4  4  4  0  0  4  0  4  4  0  4  0  0  4  0  0  0  4  4  4  4  4  0  0  0  4  0  0  0  0  4

generates a code of length 57 over Z8 who´s minimum homogenous weight is 45.

Homogenous weight enumerator: w(x)=1x^0+74x^45+207x^46+320x^47+406x^48+568x^49+864x^50+1090x^51+1409x^52+2018x^53+2286x^54+2560x^55+2875x^56+3110x^57+3203x^58+2632x^59+2290x^60+1994x^61+1503x^62+1028x^63+767x^64+608x^65+330x^66+278x^67+172x^68+74x^69+52x^70+28x^71+15x^72+2x^73+3x^74+1x^100

The gray image is a code over GF(2) with n=228, k=15 and d=90.
This code was found by Heurico 1.16 in 52.5 seconds.