{(2R,4aR,6S,7R,9aS)-6-[(2S,3aS,8aR)-2-(2-Benzyloxy-ethyl)-2,3,3a,7,8,8a-hexahydro-furo[3,2-b]oxepin-5-ylmethyl]-2-phenyl-hexahydro-1,3,5-trioxa-benzocyclohepten-7-yloxy}-triethyl-silane

(2S,3aS,5R,8aR)-2-(2-Benzyloxy-ethyl)-5-((2R,4aR,6S,7R,9aS)-2-phenyl-7-triethylsilanyloxy-hexahydro-1,3,5-trioxa-benzocyclohepten-6-ylmethyl)-hexahydro-furo[3,2-b]oxepin-6-one

(2R,4aR,6S,7R,9aS)-6-[(2S,3aS,5R,8aR)-2-(2-Benzyloxy-ethyl)-6-trimethylsilanyloxy-2,3,3a,5,8,8a-hexahydro-furo[3,2-b]oxepin-5-ylmethyl]-2-phenyl-7-triethylsilanyloxy-hexahydro-1,3,5-trioxa-benzocycloheptene

(2S,3aS,5R,7S,8aR)-2-(2-Benzyloxy-ethyl)-5-((2R,4aR,6S,7R,9aS)-2-phenyl-7-triethylsilanyloxy-hexahydro-1,3,5-trioxa-benzocyclohepten-6-ylmethyl)-7-triisopropylsilanyloxy-hexahydro-furo[3,2-b]oxepin-6-one