[{"from": "human", "value": "Provide a description of this molecule. [C][C][O][C][Branch1][C][C][C][=Branch1][C][=O][C][Branch1][C][O][O]"}, {"from": "gpt", "value": "The molecule is an agent that reacts with guanine to create a covalent adduct. In vivo, Kethoxal reacts with 30S ribosomal subunits yielding inactive ribosomes."}]