Furo(3',4':6,7)naphtho(2,3-d)-1,3-dioxol-6(5aH)-one, 9-((4,6-O-ethylidene-beta-D-glucopyranosyl)oxy)-5,8,8a,9-tetrahydro-5-(4-hydroxy-3,5-dimethoxyphenyl)-, (5R-(5alpha,5abeta,8aalpha,9beta(R*)))-
9-((4,6-O-Ethylidine-beta-D-glucopyranosyl)oxy)-5,8,8a,9-tetrahydro-5-(4-hydroxy-3,4-dimethyloxyphenyl)furo(3',4'':6,7)naptho-(2,3-d)-1,3-dioxol-6(5aH)-one