ERROR opening https://cactus.nci.nih.gov/chemical/structure/COC1%3DC%28C%3DC%28C%3DC1%29F%29C%5BC%40%5D%28%5BC%40%40H%5D2CNCCO2%29%28C3CCOCC3%29O/file?format=sdf&get3d=True  -- COC1%3DC%28C%3DC%28C%3DC1%29F%29C%5BC%40%5D%28%5BC%40%40H%5D2CNCCO2%29%28C3CCOCC3%29O could not be loaded.