You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 5-(6-ethoxy-5-fluoro-9-oxa-1,3-diazatricyclo[6.4.1.04,13]trideca-2,4(13),5,7-tetraen-2-yl)-1,3-benzoxazol-2-amine;formamide into its molecular formula.
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C20H20FN5O4
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