8-benzyloxy-6-(8-benzyloxy-7-benzyloxymethyl-5,5a,7,8,9,10,11,11a-octahydro-4H-1,6-dioxa-cycloheptacycloocten-2-ylmethyl)-7-(4-methoxy-benzyloxy)-2,2-dimethyl-octahydro-1,3,5,9-tetraoxa-benzo[f]azulene

8-benzyloxy-2-[8-benzyloxy-7-(4-methoxy-benzyloxy)-2,2-dimethyl-octahydro-1,3,5,9-tetraoxa-benzo[f]azulen-6-ylmethyl]-7-benzyloxymethyl-7,8,9,10,11,11a-hexahydro-5aH-1,6-dioxa-cycloheptacycloocten-3-one