ERROR opening https://cactus.nci.nih.gov/chemical/structure/Fc1cc%28F%29ccc1C%28O%29%28Cn2cncn2%29Cn3cncn3/file?format=sdf&get3d=True -- Fc1cc%28F%29ccc1C%28O%29%28Cn2cncn2%29Cn3cncn3 could not be loaded.