ERROR opening https://cactus.nci.nih.gov/chemical/structure/COC1%3DCC%28%3DO%29O%5BC%40H%5D%28C1%29/C%3DC/C2%3DCC3%3DC%28C%3DC2%29OCO3/file?format=sdf&get3d=True -- COC1%3DCC%28%3DO%29O%5BC%40H%5D%28C1%29/C%3DC/C2%3DCC3%3DC%28C%3DC2%29OCO3 could not be loaded.