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What is the molecular formula of the molecule (1S,3S)-1,2,2-trimethyl-3-[(6S)-3-methyl-2-oxo-6,7-dihydro-[1,2,4]triazino[2,3-c]quinazolin-6-yl]cyclopentane-1-carboxylic acid ?
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C20H24N4O3
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