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system
Provide the molecular formula for the IUPAC named substance (7S)-4,7,8-trimethyl-2-[[(3R,5S)-5-[(3,4,5-trifluorophenoxy)methyl]oxolan-3-yl]methyl]-5,7-dihydropteridin-6-one .
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C21H23F3N4O3
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