[{"from": "human", "value": "Describe this molecule. [C][=C][Se][C][=C][Ring1][Branch1]"}, {"from": "gpt", "value": "The molecule is a five-membered monocyclic heteroarene composed of four CH units and one selenium atom. The parent of the class of selenophenes. It is a mancude organic heteromonocyclic parent, a monocyclic heteroarene and a member of selenophenes."}]