[{"from": "human", "value": "Describe this molecule. [O][S][=Branch1][C][=O][=Branch1][C][=O][S][=Branch1][C][=O][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is a sulfur oxoanion. It is a conjugate base of a dithionic acid. It is a conjugate acid of a dithionate(2-)."}]