InChI=1/C20H24N2O3/c1-13-18(22-23)12-19(14-4-8-16(24-2)9-5-14)21-20(13)15-6-10-17(25-3)11-7-15/h4-11,13,19-21,23H,12H2,1-3H3/b22-18+/t13-,19+,20-/m1/s1 289E6671E8DA40E5