InChI=1/C14H17N3O4/c1-9-4-6-14(7-5-9)12(19)17(13(20)15-14)16-11(18)10-3-2-8-21-10/h2-3,8-9H,4-7H2,1H3,(H,15,20)(H,16,18)/f/h15-16H 08AA9B02ED156C16