InChI=1/C20H19ClN2O4/c1-11-4-6-13(9-15(11)21)23-19(25)22-16-10-20(23,2)27-17-7-5-12(8-14(16)17)18(24)26-3/h4-9,16H,10H2,1-3H3,(H,22,25)/t16-,20-/m1/s1/f/h22H 6E14270B6035F3B2