(2R,4S)-2-{(1R)-2-(Benzylamino)-2-oxo-1-[(phenylacetyl)amino]ethyl}-N-(2-{[((2R,4S)-2-{(1R)-2-{[4-(hydroxymethyl)benzyl]amino}-2-oxo-1-[(phenylacetyl)amino]ethyl}-5,5-dimethyl-1,3-thiazolidin-4-yl)carbonyl]amino}ethyl)-5,5-dimethyl-1,3-thiazolidine-4-carboxamide AIDS-029868 AIDS029868 Penicillin G, ET(NH)2 deriv.