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system
Name the molecular formula for the molecule established as 4-fluoro-N-[[(2R,3S)-2-(3-hydroxy-4-methoxyphenyl)-4-oxo-1-(3,4,5-trimethoxyphenyl)azetidin-3-yl]methyl]benzamide using the IUPAC nomenclature.
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C27H27FN2O7
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