InChI=1S/C26H35N3O7/c1-36-24-17-18(5-9-21(24)31)7-10-25(34)28-13-3-2-11-27-12-4-14-29-26(35)23(33)16-19-6-8-20(30)22(32)15-19/h5-6,8-9,15-17,27,30-33H,2-4,7,10-14H2,1H3,(H,28,34)(H,29,35)/b23-16-