3H-Naphtho[1',8a':5,6]pyrano[2,3-e]isoindol-3-one, 11-(acetyloxy)-1,2,6,6a,7,8,9,9a,10,11,12,13-dodecahydro-5-methoxy-6a,7,10,10-tetramethyl-, (6aR,7S,9aS,11S,13aS)- AIDS-122732 AIDS122732 Stachyflin deriv.