Columbianetin glucoside

1-[(S)-8,9-Dihydro-2-oxo-2H-furo[2,3-h]-1-benzopyran-8-yl]-1-methylethyl β-D-glucopyranoside

(S)-8-[1-(β-D-Glucopyranosyloxy)-1-methylethyl]-8,9-dihydro-2H-furo[2,3-h]-1-benzopyran-2-one