InChI=1S/C19H35N.C4H4O4/c1-3-9-16(10-4-1)19(17-11-5-2-6-12-17)15-18-13-7-8-14-20-18;5-3(6)1-2-4(7)8/h16-20H,1-15H2;1-2H,(H,5,6)(H,7,8)