[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule is a arsenic molecular entity that consists of a single arsenic atom bearing three chloro substituents. It has a role as a genotoxin. It is an arsenic molecular entity and a pnictogen halide."}, {"from": "gpt", "value": "[Cl][As][Branch1][C][Cl][Cl]"}]