12H-5,12a-(Iminomethano)[1,2,3,4,6]tetrathiazocino[6,5-a]indole-6,13(5H)-dione, 7a,8-dihydro-8-hydroxy-5-(hydroxymethyl)-14-methyl-, (5R,7aS,8S,12aR)- AIDS-192891 AIDS192891