ERROR opening https://cactus.nci.nih.gov/chemical/structure/NC%28%3DN%29c1ccc%28OCCCOc2ccc%28cc2Br%29C%28%3DN%29N%29c%28Br%29c1/file?format=sdf&get3d=True -- NC%28%3DN%29c1ccc%28OCCCOc2ccc%28cc2Br%29C%28%3DN%29N%29c%28Br%29c1 could not be loaded.