ERROR opening https://cactus.nci.nih.gov/chemical/structure/Clc3cc%5C1c%28N%28C%28%3DO%29C/N%3DC/1c2ccccc2%29CC%23C%29cc3/file?format=sdf&get3d=True  -- Clc3cc%5C1c%28N%28C%28%3DO%29C/N%3DC/1c2ccccc2%29CC%23C%29cc3 could not be loaded.