Oxacyclooctadeca-​3,​5,​9,​13,​15-​pentaen-​2-​one, 3-​[[[6-​deoxy-​4-​O-​(3,​5-​dichloro-​2-​ethyl-​4,​6-​dimethoxybenzoyl)​-​2-​O-​methyl-​β-​D-​mannopyranosyl]​oxy]​methyl]​-​12-​[[6-​deoxy-​5-​C-​methyl-​4-​O-​(2-​methyl-​1-​oxopropyl)​-​β-​D-​lyxo-​h