label: 3-(1-(tert-butyldimethylsilyl)oxy-1-(2-methoxy-4,5-methylenedioxyphenyl)methyl)-2-methylene-4-butanolide
label_lc: 3-(1-(tert-butyldimethylsilyl)oxy-1-(2-methoxy-4,5-methylenedioxyphenyl)methyl)-2-methylene-4-butanolide