ERROR opening https://cactus.nci.nih.gov/chemical/structure/%5BO-%5DP%28%3DO%29%28OCCCCCCCCCCCCCCCCCC%29OC1CC%5BN%2B%5D%28C%29%28C%29CC1/file?format=sdf&get3d=True  -- %5BO-%5DP%28%3DO%29%28OCCCCCCCCCCCCCCCCCC%29OC1CC%5BN%2B%5D%28C%29%28C%29CC1 could not be loaded.