👉 2458 - 681458 = 687290;
66 - 66 + 65 = 670;
3- (4-ethoxyphenyl)-6-phenyl-5,6-dihydro-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazole - 3-(4-ethoxyphenyl)-6-phenyl-5,6-dihydro-[1,2,4]triazolo[3,4-b][1,3,4]thiiodiazolone.
2458. 681458-66-2; 3-(4-ethoxyphenyl)-6-phenyl-5,6-dihydro-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazole