InChI=1S/C27H53N7O7/c1-8-40-26(41-9-2)20(11-10-14-30-27(28)29)33-25(39)21(15-18(3)4)32-23(36)13-12-22(35)31-19(16-24(37)38)17-34(5,6)7/h18-21,26H,8-17H2,1-7H3,(H7-,28,29,30,31,32,33,35,36,37,38,39)/t19-,20+,21+/m1/s1