3H-Naphtho[1',8a':5,6]pyrano[2,3-e]isoindol-3-one, 5,11-bis(acetyloxy)-1,2,6,6a,7,8,9,9a,10,11,12,13-dodecahydro-6a,7,10,10-tetramethyl-, (6aR,7S,9aS,11S,13aS)- AIDS-122733 AIDS122733