ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C44H50N8/c1-26-25-45-37-43-21-24-52(4)40(49-35-29(13-9-15-31(35)43)41-19-22-50(2)38(41)46-33-17-7-5-11-27(33)41)44(26,43)32-16-10-14-30(36(32)48-37)42-20-23-51(3)39(42)47-34-18-8-6-12-28(34)42/h5-18,26,37-40,45-49H,19-25H2,1-4H3/t26?,37-,38+,39+,40+,41+,42+,43?,44?/m0/s1/file?format=sdf&get3d=True  -- InChI=1S/C44H50N8/c1-26-25-45-37-43-21-24-52(4)40(49-35-29(13-9-15-31(35)43)41-19-22-50(2)38(41)46-33-17-7-5-11-27(33)41)44(26,43)32-16-10-14-30(36(32)48-37)42-20-23-51(3)39(42)47-34-18-8-6-12-28(34)42/h5-18,26,37-40,45-49H,19-25H2,1-4H3/t26?,37-,38+,39+,40+,41+,42+,43?,44?/m0/s1 could not be loaded.