[{"from": "human", "value": "Create a molecule that satisfies the conditions outlined in the description. The molecule is a branched alkane that is pentadecane carrying four methyl groups at at positions 2, 4, 6 and 10."}, {"from": "gpt", "value": "[C][C][C][C][C][C][Branch1][C][C][C][C][C][C][Branch1][C][C][C][C][Branch1][C][C][C][C][Branch1][C][C][C]"}]