ERROR opening https://cactus.nci.nih.gov/chemical/structure/COC1%3DCC%28C%3DCC%3DO%29%3DCC%28OC%29%3DC1O/file?format=sdf&get3d=True  -- COC1%3DCC%28C%3DCC%3DO%29%3DCC%28OC%29%3DC1O could not be loaded.