293761-45-2

dimethyl 4,4'-(biphenyl-4,4'-diyldiimino)bis(4-oxobutanoate) dimethyl 4,4'-[4,4'-biphenyldiyldi(imino)]bis(4-oxobutanoate) methyl 4-({4'-[(4-methoxy-4-oxobutanoyl)amino][1,1'-biphenyl]-4-yl}amino)-4-oxobutanoate