ERROR opening https://cactus.nci.nih.gov/chemical/structure/COc1cc%28Br%29c%28cc1C1CNCc2c%28C1%29cccc2%29OC/file?format=sdf&get3d=True  -- COc1cc%28Br%29c%28cc1C1CNCc2c%28C1%29cccc2%29OC could not be loaded.