mangiferin, 1,3,6,7-tetrahydroxy-2-[(3r,4r,5s,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]xanthen-9-one, 2-beta-d-glucopyranosyl-1,3,6,7-tetrahydroxy-9h-xanthen-9-one, 2-beta-d-glucopyranosyl-1,3,6,7-tetrahydroxy-9h-xanthen-9-on, XANTHONE-C-GLUCOSIDE, FROM MANGIFERA INDICA LEAVES