1α,3β-bis[(t-butyldimethylsilyl)oxy]-26,27-dimethoxy-23-oxo-9,10-secocholesta-5(Z),7(E),10(19)-trien-25-ol

1α,3β-bis[(t-butyldimethylsilyl)oxy]-23(R),25-epoxy-26,26,26,27,27,27-hexafluoro-9,10-secocholesta-5(Z),7(E),10(19)-triene

1α,3β-bis[(t-butyldimethylsilyl)oxy]-23(S),25-epoxy-26,26,26,27,27,27-hexafluoro-9,10-secocholesta-5(Z),7(E),10(19)-triene

1α,3β-bis[(t-butyldimethylsilyl)oxy]-26,26,26,27,27,27-hexafluoro-23-oxo-9,10-secocholesta-5(Z),7(E),10(19)-trien-25-ol

1α,3β-bis[(t-butyldimethylsilyl)oxy]-26,26,26,27,27,27-hexafluoro-9,10-secocholesta-5(Z),7(E),10(19)-trien-23(S),25-diol