ERROR opening https://cactus.nci.nih.gov/chemical/structure/C1%3DCC%28%3DNC%3DC1CN2CCSC2%3DNC%23N%29Cl/file?format=sdf&get3d=True  -- C1%3DCC%28%3DNC%3DC1CN2CCSC2%3DNC%23N%29Cl could not be loaded.