InChI=1S/C23H25NO3/c1-12-9-18-16(7-8-19(25)22(18)20(10-12)27-4)17-6-5-15-11-13(2)24-14(3)21(15)23(17)26/h5-10,13-14,24-26H,11H2,1-4H3