InChI=1S/C25H31NO3/c1-18(2)8-5-9-19(3)10-6-11-20(4)13-14-22-23(27)16-24(29-25(22)28)21-12-7-15-26-17-21/h7-8,10,12-13,15-17,27H,5-6,9,11,14H2,1-4H3/p-1/b19-10+,20-13+