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What is the molecular formula of the molecule N-[1-[(2R,3R,4S)-5-[2-[dimethyl(methylidene)-lambda5-phosphanyl]ethyl]-3,4-dihydroxyoxolan-2-yl]-5-ethyl-2-methylidenepyrimidin-4-yl]acetamide ?
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C18H30N3O4P
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