Polymer Structure: Nafion

Dear all,

Does any one know if the Build > Build Polymers library contains Nafion (sulfonated tetrafluoroethylene based fluoropolymer-copolymer)? I need to build this polymer with a certain degree of polymerization. Ive gone through the entire libraries under Build > Build Polymers > Polymerize > Library, yet it appears it doesnt include nafion. Your comments is much appreciated.