The generator matrix

 1  0  1  1  1  1  1  1  1  1  1  0  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  7  7  1  1 21 21  1 42  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 42 21  1  1  1  1  1  1  1  1  7  1  1 42  1  1  1  0  1  1  1  1  1  1
 0  1  1 31 16 48  4 19  0 36 31  1 16 19 48  4 36  7 38 26  9  9  6  6 44 20 46 46  1  1 32 32  1  1 11  1  7 21 43 22 22 43 38 10 26 40 12 40 44 37  0 35 31 17 20 27 21 35 45  2 41 17 27 16 43 39  1  1  1 11 40 12 37 41 39 19 42 45 29  1 21  2 10  1 35 34 29  4 26  7
 0  0 35 21 42  7 14 21  7 28 14  7 35  0  0 28 42 14 42 28  7 21 35 21 14 28  0 42 42 14  7 35 21 35 21 28 35 21  0  7 14 21  7  0 42 14 35  7 28  0 28 42 28 35 14 42  0 21  0 35 35 14 28 14 28 21 14  0 42 42  0 42 28 21 35 28 21  7  7  7  7 42 21 42 35  0 35  0 14 42

generates a code of length 90 over Z49 who´s minimum homogenous weight is 531.

Homogenous weight enumerator: w(x)=1x^0+4284x^531+882x^532+5376x^538+810x^539+1092x^545+162x^546+3654x^552+522x^553+6x^560+12x^567+6x^574

The gray image is a code over GF(7) with n=630, k=5 and d=531.
This code was found by Heurico 1.16 in 14.8 seconds.