[{"from": "human", "value": "Could you provide a description of this molecule? [C][C][C][C][N][Branch1][Branch1][C][C][C][C][N][=O]"}, {"from": "gpt", "value": "The molecule is a yellow, viscous, oily nitrosamine that is highly unstable in the presence of light. N-Nitrosodiethanolamine is ubiquitously found in the environment and is a contaminant formed by the reaction of nitrites with ethanolamines in a wide range of products including tobacco, pesticides, antifreeze and personal care products. This substance is only used for research purposes to induce tumors in experimental animals. N-Nitrosodiethanolamine is reasonably anticipated to be a human carcinogen. (NCI05)"}]