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