Monday's Molecule #208

Last week's molecule was the fatty acid synthase complex [Monday's Molecule #207]. The winner was Matt McFarlane. He should contact me by email to collect his winnings.

Today's molecule was pictured on a US stamp issued in April 2008. Can you identify the molecule? ... Be precise, there's only one correct answer and it may not be the one you think.

Email your answers to me at: Monday's Molecule #207. I'll hold off posting your answers for 24 hours. The first one with the correct answer wins. I will only post mostly correct answers to avoid embarrassment. The winner will be treated to a free lunch.

There could be two winners. If the first correct answer isn't from an undergraduate student then I'll select a second winner from those undergraduates who post the correct answer. You will need to identify yourself as an undergraduate in order to win. (Put "undergraduate" at the bottom of your email message.)

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