Aloeresin A, 7-Hydroxy-8-[2-O-[(2E)-3-(4-hydroxyphenyl)-1-oxo-2-propen-1-yl]-beta-D-glucopyranosyl]-5-methyl-2-(2-oxopropyl)-4H-1-benzopyran-4-one, (E)-7-Hydroxy-8-[2-O-[3-(4-hydroxyphenyl)-1-oxo-2-propenyl]-beta-D-glucopyranosyl]-5-methyl-2-(2-oxopropyl)-4H-1-benzopyran-4-one, Aloe resin A