128255-51-6 19-Nor-1,2-secoergost-9(11)-en-2-oicacid, 12-(acetyloxy)-6,7-epoxy-5-hydroxy-22,24,25-[propylidynetris(oxy)]-, g-lactone, [5a,6a,7a,10b,12a,22R(S)]- 128255-53-8 19-Nor-1,2-secoergost-9(11)-en-2-oicacid, 6,7-epoxy-5-hydroxy-12-oxo-22,24,25-[propylidynetris(oxy)]-, g-lactone, [5a,6a,7a,10b,22R(S)]- 128255-54-9 Butanoic acid,3-methyl-,(3aS,5aR,7R,7aS,7bS,8aR,10S,10aR,11R,12R,12aS,12bS)-11,12-bis(acetyloxy)-10-(3-furanyl)hexadecahydro-3a-hydroxy-5,5,7a,10a-tetramethyl-3-oxocyclopent[b]oxireno[1',5']cyclopenta[1',2':5,6]naphtho[1,2-c]furan-7-ylester