ERROR opening https://cactus.nci.nih.gov/chemical/structure/CCCCCCCCCC1%26%2361%3BCC%26%2361%3BC%28C%26%2361%3BC1%29OCCOCCO/file?format=sdf&get3d=True -- CCCCCCCCCC1%26%2361%3BCC%26%2361%3BC%28C%26%2361%3BC1%29OCCOCCO could not be loaded.