(+)-12-Acetoxycalanolide A 12-Acetoxycalanolide A 142566-59-4 2H,6H,10H-Benzo[1,2-b:3,4-b':5,6-b'']tripyran-2-one, 12-(acetyloxy)-11,12-dihydro-6,6,10,11-tetramethyl-4-propyl-, [10R-(10.alpha.,11.beta.,12.alpha.)]- AIDS-004463 AIDS004463 NSC674897