InChI=1/C18H17N3O4/c1-10(11-2-4-13-14(8-11)21-18(23)20-13)19-17(22)12-3-5-15-16(9-12)25-7-6-24-15/h2-5,8-10H,6-7H2,1H3,(H,19,22)(H2,20,21,23)/t10-/m1/s1/f/h19-21H 857A88E06B910C50