InChI=1S/C23H26Cl2O6/c1-22(2,30-18-10-6-16(24)7-11-18)20(26)28-14-5-15-29-21(27)23(3,4)31-19-12-8-17(25)9-13-19/h6-13H,5,14-15H2,1-4H3