ERROR opening https://cactus.nci.nih.gov/chemical/structure/c23c%28C%23Cc5ccccc5%29c1ccccc1c%20%28C%23Cc4ccccc4%29%20c2cccc3/file?format=sdf&get3d=True  -- c23c%28C%23Cc5ccccc5%29c1ccccc1c%20%28C%23Cc4ccccc4%29%20c2cccc3 could not be loaded.