(2R,4S)-2-{(1R)-2-(Benzylamino)-2-oxo-1-[(phenylacetyl)amino]ethyl}-N-(2-{[((2R,4S)-5,5-dimethyl-2-{(1R)-2-oxo-1-[(phenylacetyl)amino]-2-[(2-piperidin-1-ylethyl)amino]ethyl}-1,3-thiazolidin-4-yl)carbonyl]amino}ethyl)-5,5-dimethyl-1,3-thiazolidine-4-carboxamide AIDS-029860 AIDS029860 Penicillin G, ET(NH)2 piperid deriv.