InChI=1S/C18H34N4O6/c19-13(16(23)24)6-2-1-5-12(8-9-15(21)18(27)28)11-22-10-4-3-7-14(20)17(25)26/h5,13-15,22H,1-4,6-11,19-21H2,(H,23,24)(H,25,26)(H,27,28)/b12-5+