InChI=1S/C11H16O11/c12-4(13)1-3(2-5(14)15)21-11-8(18)6(16)7(17)9(22-11)10(19)20/h3,6-9,11,16-18H,1-2H2,(H,12,13)(H,14,15)(H,19,20)