label: 3-(3,4-dihydroxyphenyl)-8-hydroxymethyl-8-methyl-5-methoxy-6,7-dihydro-2H,8H-benzo(1,2-b-5,4-b')dipyran-2-one
label_lc: 3-(3,4-dihydroxyphenyl)-8-hydroxymethyl-8-methyl-5-methoxy-6,7-dihydro-2h,8h-benzo(1,2-b-5,4-b')dipyran-2-one