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

(2R,4aR,5aS,6aR,8R,10S,10aS,11aR,13aS)-10-Benzyloxy-8-(3-benzyloxy-propyl)-2-[3-(tert-butyl-diphenyl-silanyloxy)-propyl]-11a-methyl-dodecahydro-1,5,7,11-tetraoxa-benzo[4,5]cyclohepta[1,2-b]naphthalen-3-one