[{"from": "human", "value": "Provide a description of this molecule. [C][=C][As][C][=C][Ring1][Branch1]"}, {"from": "gpt", "value": "The molecule is that one of the three tautomers of arsole that has the double bonds at positions 2 and 4. It is a tautomer of a 3H-arsole and a 2H-arsole."}]