InChI=1/C17H21N3O4/c1-10-7-18-14(11(2)16(10)23-4)8-19-15(21)9-20-17(22)13-5-6-24-12(13)3/h5-7H,8-9H2,1-4H3,(H,19,21)(H,20,22)/f/h19-20H B2C210CB31D51417