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What is the molecular formula of the molecule 7-[(7R,8aS)-7-methoxy-3,4,6,7,8,8a-hexahydro-1H-pyrrolo[1,2-a]pyrazin-2-yl]-2-(3-fluorophenyl)-[1,2,4]triazolo[1,5-c]pyrimidin-5-amine ?
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C19H22FN7O
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