InChI=1S/C18H22Cl2O11/c1-29-7-2-6(11(23)9(21)5-10(22)16(19)20)3-8(4-7)30-18-14(26)12(24)13(25)15(31-18)17(27)28/h2-4,10-16,18,22-26H,5H2,1H3,(H,27,28)