ERROR opening https://cactus.nci.nih.gov/chemical/structure/Oc1cc3c%28cc1O%29CCC4C3c2cc%28CCC%29sc2CN4/file?format=sdf&get3d=True  -- Oc1cc3c%28cc1O%29CCC4C3c2cc%28CCC%29sc2CN4 could not be loaded.