InChI=1S/C18H22Cl2O11/c1-29-8-3-6(2-7(21)4-9(22)16(19)20)11(23)10(5-8)30-18-14(26)12(24)13(25)15(31-18)17(27)28/h3,5,9,12-16,18,22-26H,2,4H2,1H3,(H,27,28)