InChI=1S/C27H32Cl2N2O7/c1-26(2,25(34)35)37-23-12-22(19(11-20(23)29)24(33)30-3)36-15-18(32)14-31-8-6-27(7-9-31)13-16-10-17(28)4-5-21(16)38-27/h4-5,10-12,18,32H,6-9,13-15H2,1-3H3,(H,30,33)(H,34,35)/t18-/m0/s1