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

(2R,4S,4aS,5aR,8S,9R,10aS,11aR)-4-Benzyloxy-2-(3-benzyloxy-propyl)-9-[(2R,3S)-3-[3-(tert-butyl-diphenyl-silanyloxy)-propyl]-2-(toluene-4-sulfonyl)-oxiranylmethyl]-5a-methyl-dodecahydro-1,5,10-trioxa-cyclohepta[b]naphthalen-8-ol