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Please write the molecular formula of the molecule ethyl (2S)-2-[[[(1R,3S,4S,5S)-3-(4-aminoimidazo[2,1-f][1,2,4]triazin-7-yl)-4-fluoro-5-hydroxy-4-methyl-2-oxabicyclo[3.1.0]hexan-6-yl]oxy-naphthalen-1-yloxyphosphoryl]amino]propanoate .
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C26H28FN6O7P
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