[{"from": "human", "value": "What can you tell me about this molecule? [C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][As][Branch1][C][Cl][Cl]"}, {"from": "gpt", "value": "The molecule appears as a colorless odorless liquid. Density 1.654 g / cm3. Used as a lachrymator poison gas. Toxic by inhalation and skin absorption."}]