[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is an aromatic hydrocarbon composed of a benzene ring linked to two methyl groups and that exists in three isoforms depending on the sites where the methyl groups are attached. Xylene is used for various industrial applications."}, {"from": "gpt", "value": "[C][C][=C][C][=C][C][=C][Ring1][=Branch1][C]"}]