InChI=1S/C25H30N2O3/c1-3-15-26-21(17-19-11-7-5-8-12-19)23(28)24(29)22(27(16-4-2)25(26)30)18-20-13-9-6-10-14-20/h3-14,21-24,28-29H,1-2,15-18H2/t21-,22-,23+,24+/m1/s1