InChI=1S/C28H31NO3/c30-26-15-14-24-25(28(26)31)13-12-23(20-6-2-1-3-7-20)27(24)21-8-10-22(11-9-21)32-19-18-29-16-4-5-17-29/h1-3,6-11,14-15,23,27,30-31H,4-5,12-13,16-19H2/t23-,27+/m1/s1