ERROR opening https://cactus.nci.nih.gov/chemical/structure/CC1%3DC2C%3DCC3%3DCC%3DCC%3DC3C2%3DC%28C4%3DCC%3DCC%3DC14%29C/file?format=sdf&get3d=True -- CC1%3DC2C%3DCC3%3DCC%3DCC%3DC3C2%3DC%28C4%3DCC%3DCC%3DC14%29C could not be loaded.