You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[2-(cyclopentylamino)-1-(4-fluorophenyl)-2-oxoethyl]-N-(2-fluorophenyl)-2,3-dihydro-1,4-benzodioxine-6-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C28H26F2N2O4
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