Prompt
Create a realistic portrait of Martin Karplus, a renowned chemist, sitting in a library or a study with a subtle background that hints at his work in theoretical chemistry, such as molecular models or chemical equations on a blackboard. He should be depicted with a thoughtful expression, possibly with a book or a notebook in his hand, and wearing attire suitable for an academic or professional setting. Incorporate elements that reflect his Austrian and American heritage subtly, such as a piece of furniture or a decorative item. The style should be photorealistic, capturing the essence of a distinguished academic in a setting that resonates with his contributions to chemistry.