[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][=Branch2][Branch1][Branch2][=C][C][C][/C][=Branch2][Ring2][S][=C][/C][=C][/C][=Branch2][Ring2][Branch2][=C][/C][=C][/C][=Branch2][Ring1][S][=C][/C][=C][/C][=C][Branch2][Ring1][#Branch1][/C][=C][/C][=C][Branch1][S][/C][=C][/C][=C][Branch1][=Branch2][/C][C][C][=C][Branch1][C][C][C][\\C][\\C][\\C][/C][/C][/C][C]"}, {"from": "gpt", "value": "The molecule is a naturally occuring red carotenoid pigment that is responsible in red to pink colors seen in tomatoes, pink grapefruit, and other foods. Having a chemical formula of C40H56, lycopene is a tetraterpene assembled from eight isoprene units that are solely composed of carbon and hydrogen. Lycophene may undergo extensive isomerization that allows 1056 theoretical cis-trans configurations; however the all-trans configuration of lycopene is the most predominant isomer found in foods that gives the red hue. Lycopene is a non-essential human nutrient that is classified as a non-provitamin A carotenoid pigment since it lacks a terminal beta ionone ring and does not mediate vitamin A activity. However lycophene is a potent antioxidant molecule that scavenges reactive oxygen species (ROS) singlet oxygen. Tomato lycopene extract is used as a color additive in food products."}]