InChI=1S/C16H21N3O6/c1-8-4-5-10(13(21)18-15(24)25)11(6-8)12(17)19-16(3,14(22)23)9(2)7-20/h4-6,9,20H,7H2,1-3H3,(H2,17,19)(H,18,21)(H,22,23)(H,24,25)