You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-(3-fluoro-6-methoxy-1,5-naphthyridin-4-yl)-1-[5-[[hydroxy-[(2-methylpropan-2-yl)oxy]methyl]amino]oxan-2-yl]ethanol by IUPAC nomenclature, provide its molecular formula.
user
C21H30FN3O5
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