InChI=1/C16H15N3O4/c1-10-6-7-13(8-11(10)2)16(20)23-18-15(17)12-4-3-5-14(9-12)19(21)22/h3-9H,1-2H3,(H2,17,18)/f/h17H2/b18-15- B6FFBC6A327D59E8