InChI=1/C16H19N3O4/c1-10-8-15(23-19-10)18-16(20)11(2)17-12-4-5-13-14(9-12)22-7-3-6-21-13/h4-5,8-9,11,17H,3,6-7H2,1-2H3,(H,18,20)/t11-/m0/s1/f/h18H 855E5336012ACD54