InChI=1S/C15H21NO2.C2H2O4/c1-3-14(18)15(7-9-16(2)10-8-15)12-5-4-6-13(17)11-12;3-1(4)2(5)6/h4-6,11,17H,3,7-10H2,1-2H3;(H,3,4)(H,5,6)