36601-30-6 9a-(Acetyloxy)-2,3,6a,9a-tetrahydro-4-methoxycyclopenta(c)furo(3',2':4,5)furo(2,3-h)(1)benzopyran-1,11-dione Cyclopenta(c)furo(3',2':4,5)furo(2,3-h)(1)benzopyran-1,11-dione, 9a-(acetyloxy)-2,3,6a,9a-tetrahydro-4-methoxy-