2-Propen-1-one, 1-(4-(beta-D-glucopyranosyloxy)-2-hydroxyphenyl)-3-(3-(beta-D-glucopyranosyloxy)-4-hydroxyphenyl)-, (E)- 3,4,2',4'-Tetrahydroxychalcone-3,4'-diglucoside 536-01-6 Isobutrin