51906-03-7 (1aR,2R,3S,4aR,6S,7S,7aS,8E,10R,11R,11aS)-2-Acetyloxy-7,10,11-tris(benzoyloxy)-1a,2,3,6,7,10,11,11a-octahydro-1,1,3,6,9-pentamethyl-4a,7a-epoxy-5H-cyclopenta[a]cyclopropa[f]cycloundecen-4(1H)-one 51906-06-0 2,7,9,10-Tetrakis(acetyloxy)-1a,3,4,7,7a,8,8a,9,10,10a-decahydro-3,6,8,8,10a-pentamethyl-1b,4a-epoxy-2H-cyclopenta[3,4]cyclopropa[8,9]cycloundec[1,2-b]oxiren-5(6H)-one