ERROR opening https://cactus.nci.nih.gov/chemical/structure/Oc1c%28O%29c%28O%29c%28O%29c%28O%29c1O/file?format=sdf&get3d=True -- Oc1c%28O%29c%28O%29c%28O%29c%28O%29c1O could not be loaded.