[{"from": "human", "value": "Could you provide a description of this molecule? [C][=C][C][=C][Branch1][N][C][=Branch1][Ring2][=C][Ring1][=Branch1][C][=Branch1][C][=O][N][O]"}, {"from": "gpt", "value": "The molecule appears as odorless white or slightly pink crystals. Bitter taste, leaves a sensation of warmth on the tongue. pH (saturated aqueous solution at 82 \u00b0F) about 5. Sublimation begins at the melting point. "}]