InChI=1S/C20H28N2O4/c1-14(23)22-8-4-5-15(12-22)19(24)21-13-20(2,3)16-6-7-17-18(11-16)26-10-9-25-17/h6-7,11,15H,4-5,8-10,12-13H2,1-3H3,(H,21,24)