InChI=1S/C12H18O11/c1-12(21,2-4(13)14)3-5(15)22-11-8(18)6(16)7(17)9(23-11)10(19)20/h6-9,11,16-18,21H,2-3H2,1H3,(H,13,14)(H,19,20)