ERROR opening https://cactus.nci.nih.gov/chemical/structure/COCCOC%28%3DO%29C12CC%28C4%29CN%28C2C4CCOC%29CCc5c1nc3ccccc35/file?format=sdf&get3d=True -- COCCOC%28%3DO%29C12CC%28C4%29CN%28C2C4CCOC%29CCc5c1nc3ccccc35 could not be loaded.