11,14-Bis(2-carboxyethyl)-17-(hydrazinocarbonyl)-3,6,9,12,15-pentaoxo-1-phenyl-2-oxa-4,7,10,13,16-pentaazaicosan-20-oic acid hydrochloride AIDS-158435 AIDS158435 NSC668451 (HYDROCHLORIDE SALT)