InChI=1S/C23H21Cl3O5/c1-10-7-6-8-14(24)20(10)31-21-11(2)12(3)22(17(25)13(21)4)30-16-9-15(27)19(28)23(29-5)18(16)26/h6-9,27-28H,1-5H3