InChI=1/C27H25NO/c1-17-9-5-6-10-19(17)15-24-26-21(20-11-7-8-12-23(20)29-24)13-14-22-25(26)18(2)16-27(3,4)28-22/h5-16,28H,1-4H3/b24-15- 6EEB40123B0FB3C4