1-Piperidinecarboxylic acid, 4-[(1S,4S,14S)-14-carboxy-1-[[(2-methylpropoxy)carbonyl]amino]-4-(2-methylpropyl)-2,5,8,9,12-pentaoxo-14-phenyl-7-propyl-3,6,10,13-tetraazatetradec-1-yl]-, 9H-fluoren-9-ylmethyl ester AIDS-115633 AIDS115633