InChI=1/C13H15ClN2O4/c14-12-7-9(16(19)20)4-5-11(12)13(18)15-8-2-1-3-10(17)6-8/h4-5,7-8,10,17H,1-3,6H2,(H,15,18)/t8-,10+/m1/s1/f/h15H F42ABFCCE9614BD2