InChI=1S/C17H23ClN2O4/c1-10(2)14(20-16(23)24-17(3,4)5)15(22)19-13-8-6-7-12(18)11(13)9-21/h6-10,14H,1-5H3,(H,19,22)(H,20,23)/t14-/m0/s1