[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule is a dimethylnaphthalene carrying methyl groups at positions 2 and 6. It has a role as an environmental contaminant."}, {"from": "gpt", "value": "[C][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][C][=C][Branch1][Branch1][C][=C][Ring1][Branch2][C]"}]