AIDS-005388 AIDS005388 Penicillin Et(NH)2 dimer [2R-[2.alpha.(R*),4.beta.]]-4,4'-[1,2-Ethanediylbis[aminocarbonyl]]bis[N-ethyl-5,5-dimethyl-.alpha.-[(2-thienylacetyl)amino]-2-thiazolidineacetamide]