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