InChI=1S/C27H37N3O7/c1-36-23-17-19(6-9-21(23)31)7-10-25(33)29-14-4-3-12-28-13-5-15-30-26(34)11-8-20-16-22(32)27(35)24(18-20)37-2/h6,8-9,11,16-18,28,31-32,35H,3-5,7,10,12-15H2,1-2H3,(H,29,33)(H,30,34)/b11-8+