InChI=1S/C24H26N2O2/c1-17(22-8-4-6-19-5-2-3-7-23(19)22)25-20-13-14-26(16-20)21-11-9-18(10-12-21)15-24(27)28/h2-12,17,20,25H,13-16H2,1H3,(H,27,28)/t17-,20+/m1/s1