166197-29-1 A-Homo-24-nor-4-oxachola-14,20,22-trien-3-one,1,12-bis(acetyloxy)-21,23-epoxy-7-[(2-hydroxy-3-methyl-1-oxopentyl)oxy]-4a-[[(2-hydroxy-3-methyl-1-oxopentyl)oxy]methyl]-4a,8-dimethyl-,(1a,4ab,5a,7a,12a,13a,17a)- 166241-44-7 1,4:6,10-Diepoxy-2H-cycloheptdoxepin-5,9(1H,4H)-dione, 5a,6,10,10a-tetrahydro-, 1S-(1.alpha.,4.alpha.,5a.beta.,6.alpha.,10.alpha.,10a.beta.)-