ERROR opening https://cactus.nci.nih.gov/chemical/structure/C1%5BC%40%40H%5D%28OC2%3DCC%3DCC%3DC2O1%29CNCCCOC3%3DCC4%3DC%28C%3DC3%29OCO4/file?format=sdf&get3d=True  -- C1%5BC%40%40H%5D%28OC2%3DCC%3DCC%3DC2O1%29CNCCCOC3%3DCC4%3DC%28C%3DC3%29OCO4 could not be loaded.