Keywords: Perfluorocyclobutane.svg Skeletal formula of perfluorocyclobutane octafluorocyclobutane Created using http //www acdlabs com/download/chemsk html ACD/ChemSketch 10 0 and Inkscape Own 2007-07-13 Fvasconcellos 16 13 13 July 2007 UTC 200px Perfluorocarbons |