InChI=1/C19H15N3O5/c1-2-26-18-9-13(11-20)3-6-17(18)27-19(23)12-21-8-7-14-10-15(22(24)25)4-5-16(14)21/h3-10H,2,12H2,1H3 B7BDAE4EF43B8C8F