InChI=1/C20H17ClN2O6/c1-3-27-18-10-14(9-17-20(24)29-12(2)22-17)8-16(21)19(18)28-11-13-4-6-15(7-5-13)23(25)26/h4-10H,3,11H2,1-2H3/b17-9- 736A84EA24A6863B