(1S,3R,7S,10R,12S,13R)-13-Benzyloxy-12-benzyloxymethyl-7-methyl-2,6,11-trioxa-tricyclo[8.5.0.03,7]pentadecan-5-one

(2R,6R,7S)-6-Benzyloxy-7-benzyloxymethyl-2-((2R,4aR,6S,7R,9aS)-2-phenyl-7-triethylsilanyloxy-hexahydro-1,3,5-trioxa-benzocyclohepten-6-ylmethyl)-oxepan-3-one