ERROR opening https://cactus.nci.nih.gov/chemical/structure/NCCc1cn%28c2ccccc12%29S%28%3DO%29%28%3DO%29c1c%28Cl%29nc2sccn12/file?format=sdf&get3d=True  -- NCCc1cn%28c2ccccc12%29S%28%3DO%29%28%3DO%29c1c%28Cl%29nc2sccn12 could not be loaded.