ERROR opening http://cactvs.nci.nih.gov/chemical/structure/c1ccc%28cc1%29C%28%3DO%29C%28%3DO%29c2ccccc2/file?format=sdf&get3d=True -- c1ccc%28cc1%29C%28%3DO%29C%28%3DO%29c2ccccc2 could not be loaded.