ERROR opening https://cactus.nci.nih.gov/chemical/structure/Oc1cccc2Cc3cccc%28O%29c3C%28%3DO%29c12/file?format=sdf&get3d=True  -- Oc1cccc2Cc3cccc%28O%29c3C%28%3DO%29c12 could not be loaded.