InChI=1/C21H15N3O5/c1-12-10-13(6-9-17(12)24(27)28)20(26)22-14-7-8-15(18(25)11-14)21-23-16-4-2-3-5-19(16)29-21/h2-11,23,25H,1H3/b21-15-,22-14? 1BE0081025922A77