[{"from": "human", "value": "Use the given information to create a molecule that fulfills the desired purpose. The molecule is a perfluoroalkanesulfonic acid that is butane-1-sulfonic acid in which all of the hydrogens of the butyl group have been replaced by fluorines. It has a role as a surfactant."}, {"from": "gpt", "value": "[C][Branch2][Ring1][#Branch1][C][Branch1][S][C][Branch1][C][F][Branch1][C][F][S][=Branch1][C][=O][=Branch1][C][=O][O][Branch1][C][F][F][Branch1][=Branch2][C][Branch1][C][F][Branch1][C][F][F][Branch1][C][F][F]"}]