InChI=1S/C16H17ClN2O5/c1-2-24-14(21)7-13(20)19-12(16(22)23)6-9-8-18-11-5-3-4-10(17)15(9)11/h3-5,8,12,18H,2,6-7H2,1H3,(H,19,20)(H,22,23)/t12-/m1/s1