InChI=1S/C12H18O11/c1-12(21,11(19)20)3-2-4(13)22-10-7(16)5(14)6(15)8(23-10)9(17)18/h5-8,10,14-16,21H,2-3H2,1H3,(H,17,18)(H,19,20)