InChI=1S/C24H30N2O3/c27-23-8-4-7-22-18-13-19(15-26(22)23)21-11-10-20(16-25(21)14-18)29-24(28)12-9-17-5-2-1-3-6-17/h1-3,5-6,9,12,18-22H,4,7-8,10-11,13-16H2/b12-9+/t18?,19?,20-,21?,22?/m1/s1