InChI=1S/C16H21N3O6/c1-7(2)16(4,14(22)23)19-12(17)9-5-8(3)11(20)6-10(9)13(21)18-15(24)25/h5-7,20H,1-4H3,(H2,17,19)(H,18,21)(H,22,23)(H,24,25)