6H-naphtho[1,2,3-ij]-2,7-naphthyridin-7-yl beta-glucopyranoside InChI=1/C21H20N2O6/c24-9-13-17(25)18(26)19(27)21(28-13)29-20-12-4-2-1-3-11(12)15-14-10(5-7-22-15)6-8-23-16(14)20/h1-8,13,17-19,21,23-27H,9H2/t13-,17-,18+,19-,21+/m1/s beta-D-glucopyranoside, 6H-naphtho[1,2,3-ij][2,7]naphthyridin-7-yl