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