ERROR opening https://cactus.nci.nih.gov/chemical/structure/c5c3c1cccc2c1c%28ccc2%29c3c4ccccc4c5/file?format=sdf&get3d=True  -- c5c3c1cccc2c1c%28ccc2%29c3c4ccccc4c5 could not be loaded.