label: (1S*,2R*,5S*,6S*)-2-(3,5-dimethoxyphenyl)-6-(3,4-methylenedioxyphenyl)-3,7-dioxabicyclo(3.3.0)octane
label_lc: (1s*,2r*,5s*,6s*)-2-(3,5-dimethoxyphenyl)-6-(3,4-methylenedioxyphenyl)-3,7-dioxabicyclo(3.3.0)octane