InChI=1S/C28H27NO3/c1-18-6-5-7-20(14-18)21-10-13-25-23(15-21)24(26(30)27(31)32)17-29(25)16-19-8-11-22(12-9-19)28(2,3)4/h5-15,17H,16H2,1-4H3,(H,31,32)