InChI=1S/C26H31NO3/c1-14-13-26(4,5)9-8-18(14)11-17-6-7-21-20(12-17)22-23(27-21)19(10-15(2)28)16(3)24(29)25(22)30/h6-7,12,15,27-28H,8-11,13H2,1-5H3/t15-/m1/s1