[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][C][O][P][=Branch1][C][=O][Branch1][C][O-1][O-1]"}, {"from": "gpt", "value": "The molecule is an organophosphate oxoanion that is the dianion of ethyl phosphate arising from deprotonation of both OH groups of the phosphate. It has a role as an epitope, a phosphoantigen and a metabolite. It is a conjugate base of an ethyl hydrogen phosphate(1-)."}]