(R)-N-(2-Methylbenzyl)-3-[(2S,3S)-3-(2,3-dimethylsuccinyl)amino-2-hydroxy-4-phenylbutanoyl]-1,3-thiazolidine-4-carboxamide (2,3-dimethylsuccinyl-Apns-Thz-NH-(2-methyl)Bzl, KNI-690 AIDS-072506 AIDS072506 KNI-690