The generator matrix

 1  0  0  0  0  1  1  1  6  1  1  0  1  1  4  2  1  4  4  1  6  4  1  4  1  1  1  1  1  0  1  2  1  1  1  1  6  6  0  1  6  4  4  1  6  1  1  1  1  1  1  2  1  1  1  1  1  1
 0  1  0  0  0  0  4  4  0  5  1  1  7  5  1  1  2  6  6  5  1  1  6  1  2  6  7  0  5  4  7  6  7  0  6  1  1  1  1  7  1  0  4  1  6  4  0  7  0  1  5  1  0  0  0  0  0  0
 0  0  1  0  0  2  1  3  1  1  3  1  2  0  5  0  3  1  1  5  6  3  0  2  1  7  7  4  4  0  4  4  3  3  6  4  2  0  3  5  1  1  1  2  1  6  3  2  7  5  4  5  6  5  0  0  0  0
 0  0  0  1  0  3  1  2  3  2  1  6  7  2  3  1  5  4  1  1  0  5  7  1  0  0  4  6  5  1  4  0  6  3  3  7  0  3  0  0  6  2  7  3  3  7  5  6  7  6  4  2  5  6  0  0  0  0
 0  0  0  0  1  1  2  3  3  0  3  5  4  1  0  7  6  3  5  4  3  7  6  6  3  4  3  6  1  3  5  1  0  5  0  7  0  0  6  3  2  3  6  2  2  4  7  7  6  7  4  0  4  5  4  0  0  0
 0  0  0  0  0  4  0  0  0  0  4  4  0  4  4  0  4  0  4  4  0  0  0  4  4  0  4  4  0  4  0  4  4  0  4  4  0  0  4  0  0  4  4  4  0  0  0  0  4  4  4  4  0  0  0  0  0  0

generates a code of length 58 over Z8 who´s minimum homogenous weight is 45.

Homogenous weight enumerator: w(x)=1x^0+36x^45+117x^46+228x^47+241x^48+740x^49+1124x^50+1724x^51+2169x^52+3070x^53+3376x^54+5026x^55+5200x^56+6438x^57+6195x^58+6606x^59+5202x^60+5154x^61+3678x^62+3348x^63+1995x^64+1506x^65+959x^66+660x^67+324x^68+196x^69+97x^70+70x^71+31x^72+12x^73+6x^74+2x^75+5x^76

The gray image is a code over GF(2) with n=232, k=16 and d=90.
This code was found by Heurico 1.16 in 98.9 seconds.