[{"from": "human", "value": "Use the given information to create a molecule that fulfills the desired purpose. The molecule is a hydrocarbon and one of the isomers of pentene. Pentenes are components of gasoline and are often produced as by-products of catalytic of thermal cracking of petroleum. (L1287)"}, {"from": "gpt", "value": "[C][C][Branch1][C][C][C][=C]"}]