InChI=1/C16H21N3O4/c1-9(16-17-10(2)18-23-16)19-7-11-13(21-3)5-6-14(22-4)15(11)12(20)8-19/h5-6,9,12,20H,7-8H2,1-4H3/t9-,12+/m0/s1 FC3B8DB4B91EEC28