AIDS-188372 AIDS188372 Spiro[cyclobutane-1,3'(2'H)-pyrrolo[3,2-b]pyrrol]-2'-one, 1'-(cyclopropylcarbonyl)-4'-[(2S)-2-[[[(cyclopropylmethyl)amino]carbonyl]amino]-3-methyl-1-oxobutyl]hexahydro-, (3a'R,6a'S)-