ERROR opening https://cactus.nci.nih.gov/chemical/structure/C1CN%28CCC1N2C3%3DCC%3DCC%3DC3NC2%3DO%29CCCC4%3DNOC5%3DC4C%3DCC%28%3DC5%29F/file?format=sdf&get3d=True -- C1CN%28CCC1N2C3%3DCC%3DCC%3DC3NC2%3DO%29CCCC4%3DNOC5%3DC4C%3DCC%28%3DC5%29F could not be loaded.