InChI=1S/C23H28N2O3/c1-14-19(22(27)28-16-6-4-5-7-16)20(15-8-10-24-11-9-15)21-17(25-14)12-23(2,3)13-18(21)26/h8-11,16,20,25H,4-7,12-13H2,1-3H3