ERROR opening https://cactus.nci.nih.gov/chemical/structure/C4CCCCCCC4CN%28CC1CO%29CCC1n3c2ccccc2n%28CC%29c3%3DO/file?format=sdf&get3d=True  -- C4CCCCCCC4CN%28CC1CO%29CCC1n3c2ccccc2n%28CC%29c3%3DO could not be loaded.