InChI=1S/C12H18O11/c1-2-21-5(13)3-4(10(17)18)22-12-8(16)6(14)7(15)9(23-12)11(19)20/h4,6-9,12,14-16H,2-3H2,1H3,(H,17,18)(H,19,20)