(2S,4S,4aS,5aR,7aS,12aR,13aS,14aR)-4-(benzyloxy)-2-((benzyloxy)methyl)-9-(3-((tert-butyldimethylsilyl)oxy)propyl)-5a-methylhexadecahydrooxepino[3,2-b]pyrano[2',3':5,6]pyrano[2,3-f]oxepin-10-ol

oxepino<3,2-b>pyrano<2',3':5,6>pyrano<2,3-f>oxepin, 2-<(2,2,2-trimethylacetoxy)methyl>-4,10-bis<(tert-butyldimethylsilyl)oxy>-9-<1-<(tert-butyldimethylsilyl)oxy>propyl>hexadecahydro-5a,10-dimethyl-,<2R-<2α,4α,4aβ,5aβ,7aβ,9α,10β,12aα,13aα,14aα.

oxepino<3,2-b>pyrano<2',3':5,6>pyrano<2,3-f>oxepin-2-prop-2-enoate, 4,10-bis<(tert-butyldimethylsilyl)oxy>-9-<1-<(tert-butyldimethylsilyl)oxy>propyl>hexadecahydro-5a,10-dimethyl-, <2R-<2α,4α,4aβ,5aβ,7aβ,9α,10β,12aα,13aα,14aα>>-, methyl ester

2-(((2R,4S,4aR,5aR,7aS,9R,10S,12aR,13aS,14aR)-10-((tert-butyldimethylsilyl)oxy)-9-((Z)-hexa-3,5-dien-1-yl)-5a,10-dimethyl-4-((triisopropylsilyl)oxy)hexadecahydrooxepino[3,2-b]pyrano[2',3':5,6]pyrano[2,3-f]oxepin-2-yl)methyl)acrylaldehyde