InChI=1/C16H19N3O4/c20-15(18-10-3-1-2-4-10)8-19-12-6-14-13(22-9-23-14)5-11(12)17-7-16(19)21/h5-6,10,17H,1-4,7-9H2,(H,18,20)/f/h18H 2B6B84A7472B487E