Benzathine Benzylpenicillin EP Impurity K

Chemical Name: (2R,2'R,4S,4'S)-2,2'-[(4R,11R)-6,9-dibenzyl-2,5,10,13-tetraoxo-1,14-diphenyl-3,6,9,12-tetraazatetradecane-4,11-diyl]bis(5,5-dimethyl-1,3-thiazolidine-4-carboxylic acid).

Smile: O=C(CC1=CC=CC=C1)N[C@@H]([C@H]2SC(C)(C)[C@H](C(O)=O)N2)C(N(CC3=CC=CC=C3)CCN(CC4=CC=CC=C4)C([C@H]([C@H]5SC(C)(C)[C@H](C(O)=O)N5)NC(CC6=CC=CC=C6)=O)=O)=O