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