2,4-Hexadienedioic acid, 3-[1-acetyl-2'-(ethoxycarbonyl)-1,2-dihydro-1'-[(4-methylphenyl)sulfonyl]spiro[3H-indole-3,3'-pyrrolidin]-2-yl]-, dimethyl ester, (2Z,4Z)- AIDS-132970 AIDS132970 NSC627877