ERROR opening https://cactus.nci.nih.gov/chemical/structure/c4ccccc4Oc%28cc2%29ccc2C%28C%29%28OC1%3DO%29C%28%3DO%29N1Nc3ccccc3/file?format=sdf&get3d=True  -- c4ccccc4Oc%28cc2%29ccc2C%28C%29%28OC1%3DO%29C%28%3DO%29N1Nc3ccccc3 could not be loaded.