InChI=1S/C26H35N3O7/c1-36-23-18-26(35,11-9-21(23)31)12-10-25(34)28-15-3-2-13-27-14-4-16-29-24(33)8-6-19-5-7-20(30)22(32)17-19/h5-9,11,17-18,27,30,32,35H,2-4,10,12-16H2,1H3,(H,28,34)(H,29,33)/b8-6+