label: (4-hydroxy-5,8-dimethyl-3-(4-methyl-5-oxo-2,5-dihydrofuran-2-yloxy)methylene)-3a,4-dihydro-3H-indeno(1,2-b)furan-2(8bH)-one
label_lc: (4-hydroxy-5,8-dimethyl-3-(4-methyl-5-oxo-2,5-dihydrofuran-2-yloxy)methylene)-3a,4-dihydro-3h-indeno(1,2-b)furan-2(8bh)-one