[{"from": "human", "value": "Describe this molecule. [O][As][=Branch1][C][=O][Branch1][C][O][O]"}, {"from": "gpt", "value": "The molecule is an arsenic oxoacid comprising one oxo group and three hydroxy groups attached to a central arsenic atom. It has a role as an Escherichia coli metabolite. It is a conjugate acid of an arsenate(1-) and an arsenate ion."}]