Synonyms: 2-Oxa-8,9-dithia-4,13-diazatetradecan-14-oicacid, 5,12-dicarboxy-3-oxo-1-phenyl-, 14-(phenylmethyl) ester, (5R,12R)-rel-(9CI); 2-Oxa-8,9-dithia-4,13-diazatetradecan-14-oic acid,5,12-dicarboxy-3-oxo-1-phenyl-, 14-(phenylmethyl) ester, (R*,R*)-(?à)-