[1aα(S*),3aβ,6aβ,6bα]-1a-[4-[[(1,1-dimethylethyl)dimethylsilyl]oxy]-1-methylbutyl]hexahydro-2,6-bis(methylene)oxireno[e]benzofuran-5(2H)-one

(S)-4-((3aS,4S,7aR)-6-((formyloxy)methyl)-4-hydroxy-3-methylene-2-oxo-2,3,3a,4,7,7a-hexahydrobenzofuran-5-yl)pentyl formate

(1aS*,2α,6aβ,7aβ,10aβ,10bβ)-hexahydro-2,6a-dimethyl-6aH-furo[3,2-h]oxireno[f][l]benzoxepin-5,9(2H,10H)-dione

[1aα(R*),2α,3aβ,6aβ,6bα]-1a-[4-[[(1,1-dimethylethyl)dimethylsilyl]oxy]-1-methylbutyl]hexahydro-2-hydroxy-2-methyloxireno[e]benzofuran-5(2H)-one

[1aα(S*),3aβ,6aβ,6bα]-1a-[4-[[(1,1-dimethylethyl)dimethylsilyl]oxy]-1-methylbutyl]hexahydro-2-methylenoxireno[e]benzofuran-5(2H)-one