ERROR opening https://cactus.nci.nih.gov/chemical/structure/COC1%3DCC%3DC%28C%3DC1%29%5BC%40%40%5D%28C2CC2%29%28C3%3DCN%3DCN%3DC3%29O/file?format=sdf&get3d=True  -- COC1%3DCC%3DC%28C%3DC1%29%5BC%40%40%5D%28C2CC2%29%28C3%3DCN%3DCN%3DC3%29O could not be loaded.