InChI=1/C14H15N3O4/c1-14(12(19)15-13(20)16-14)7-17-6-8-3-4-9(21-2)5-10(8)11(17)18/h3-5H,6-7H2,1-2H3,(H2,15,16,19,20)/t14-/m1/s1/f/h15-16H F7AC88C3BB636301