InChI=1S/C14H16N2O3/c17-4-3-10-7-15-13-2-1-9(6-12(10)13)5-11-8-19-14(18)16-11/h1-2,6-7,11,15,17H,3-5,8H2,(H,16,18)/t11-/m0/s1