ERROR opening https://cactus.nci.nih.gov/chemical/structure/C1%28OCC2%29%3DC%28N2C3%3DC4CCNCC3%29C4%3DCC%3DC1/file?format=sdf&get3d=True -- C1%28OCC2%29%3DC%28N2C3%3DC4CCNCC3%29C4%3DCC%3DC1 could not be loaded.