InChI=1S/C40H56N4/c1-33-31-37-35-23-15-17-25-39(35)43(33)29-21-13-9-5-6-10-14-22-30-44-34(2)32-38(36-24-16-18-26-40(36)44)42-28-20-12-8-4-3-7-11-19-27-41-37/h15-18,23-26,31-32H,3-14,19-22,27-30H2,1-2H3/p+2/b41-37+,42-38+