InChI=1/C24H26N2O2/c1-17(20-13-8-10-16-23(20)28-3)25-18(2)24(27)26-22-15-9-7-14-21(22)19-11-5-4-6-12-19/h4-18,25H,1-3H3,(H,26,27)/t17-,18+/m1/s1/f/h26H 2E5BC40904E17938