[{"from": "human", "value": "Describe this molecule. [C][=Branch1][=N][=C][Branch1][=Branch2][C][=Branch1][C][=O][C][Ring1][Branch1][=O][O-1][O-1]"}, {"from": "gpt", "value": "The molecule is a carbon oxoanion which is the dianion obtained by the deprotonation of the hydroxy group of hydrogensquarate. It is a carbon oxoanion and a member of squarates. It is a conjugate base of a hydrogensquarate."}]