InChI=1/C16H19N3O4/c1-22-11-7-10-8-12(18-15(10)13(9-11)23-2)16(21)19-5-3-14(20)17-4-6-19/h7-9,18H,3-6H2,1-2H3,(H,17,20)/f/h17H F4AE6ABC13514434