ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC1%28C2%3DC%28C%3DCC%28%3DC2%29C3%3DCC%3DC%28N3C%29C%23N%29NC%28%3DS%29O1%29C/file?format=sdf&get3d=True  -- CC1%28C2%3DC%28C%3DCC%28%3DC2%29C3%3DCC%3DC%28N3C%29C%23N%29NC%28%3DS%29O1%29C could not be loaded.