InChI=1S/C27H37N3O7/c1-36-23-18-20(6-8-21(23)31)7-9-25(33)30-17-5-15-28-14-3-4-16-29-26(34)11-13-27(35)12-10-22(32)24(19-27)37-2/h6-10,12,18-19,28,31,35H,3-5,11,13-17H2,1-2H3,(H,29,34)(H,30,33)/b9-7+