InChI=1/C18H17N3O6/c22-12-6-5-11(13(23)7-12)8-20-21-17(24)9-19-18(25)16-10-26-14-3-1-2-4-15(14)27-16/h1-8,16,22-23H,9-10H2,(H,19,25)(H,21,24)/b20-8+/t16-/m1/s1/f/h19,21H 4C914982DD2AEFA7