InChI=1S/C20H19Cl2NO8/c21-10-5-3-6-11(22)14(10)23-12-7-2-1-4-9(12)8-13(24)30-20-17(27)15(25)16(26)18(31-20)19(28)29/h1-7,15-18,20,23,25-27H,8H2,(H,28,29)/t15-,16-,17+,18-,20+/m0/s1