InChI=1/C21H25N3O4/c1-15(21(27)28)24-19-5-3-2-4-18(19)22-20(24)17-8-6-16(7-9-17)14-23(10-12-25)11-13-26/h2-9,15,25-26H,10-14H2,1H3,(H,27,28)/t15-/m0/s1/f/h23H 5F20D60F1683B686