ERROR opening https://cactus.nci.nih.gov/chemical/structure/InChI=1S/C44H34N4O2/c1-49-37-29-17-15-27-35(37)43-45-41(33-23-11-5-12-24-33)42(34-25-13-6-14-26-34)48(43)44(36-28-16-18-30-38(36)50-2)46-39(31-19-7-3-8-20-31)40(47-44)32-21-9-4-10-22-32/h3-30H,1-2H3/file?format=sdf&get3d=True  -- InChI=1S/C44H34N4O2/c1-49-37-29-17-15-27-35(37)43-45-41(33-23-11-5-12-24-33)42(34-25-13-6-14-26-34)48(43)44(36-28-16-18-30-38(36)50-2)46-39(31-19-7-3-8-20-31)40(47-44)32-21-9-4-10-22-32/h3-30H,1-2H3 could not be loaded.