InChI=1S/C20H26N2.C4H6O6/c1-20(2)16-10-5-7-12-18(16)22(15-9-14-21(3)4)19-13-8-6-11-17(19)20;5-1(3(7)8)2(6)4(9)10/h5-8,10-13H,9,14-15H2,1-4H3;1-2,5-6H,(H,7,8)(H,9,10)/t;1-,2-/m.1/s1