2H,10H-Dipyrano[2,3-f:2',3'-h]quinolin-10-one, 6,7,8,9-tetrahydro-8-hydroxy-2,2,6,7-tetramethyl-12-propyl-, (6R,7S,8S)- AIDS-094168 AIDS094168 Aza-Calanolide A NSC701777