InChI=1S/C12H16O11/c1-2-3(13)8(7(17)10(18)19)22-12-6(16)4(14)5(15)9(23-12)11(20)21/h4-6,8-9,12,14-16H,2H2,1H3,(H,18,19)(H,20,21)