You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 6-fluoro-7-[3-(oxan-2-ylmethylamino)oxyazetidin-1-yl]-4-oxo-1-(1,3-thiazol-2-yl)-1,8-naphthyridine-3-carboxylic acid into molecular formula.
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C21H22FN5O5S
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