(4S,4'S)-2,2'-((4R,11R)-6,9-DIBENZYL-2,5,10,13-TETRAOXO-1,14-DIPHENOXY-3,6,9,12-TETRAAZATETRADECANE-4,11-DIYL)BIS(5,5-DIMETHYLTHIAZOLIDINE-4-CARBOXYLIC ACID)
(4s,4's)-2,2'-((4r,11r)-6,9-dibenzyl-2,5,10,13-tetraoxo-1,14-diphenoxy-3,6,9,12-tetraazatetradecane-4,11-diyl)bis(5,5-dimethylthiazolidine-4-carboxylic acid)