ERROR opening https://cactus.nci.nih.gov/chemical/structure/CN%28C%28%3DO%29Cc1ccc%28cc1%29c2ccccn2%29c3nc%28C%29c%28s3%29S%28%3DO%29%28%3DO%29N/file?format=sdf&get3d=True -- CN%28C%28%3DO%29Cc1ccc%28cc1%29c2ccccn2%29c3nc%28C%29c%28s3%29S%28%3DO%29%28%3DO%29N could not be loaded.