ERROR opening https://cactus.nci.nih.gov/chemical/structure/c1ccc%28cc1%29c2c3ccccc3c%28c4c2cccc4%29c5ccccc5/file?format=sdf&get3d=True  -- c1ccc%28cc1%29c2c3ccccc3c%28c4c2cccc4%29c5ccccc5 could not be loaded.