You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[2-(2,5-difluoroanilino)-2-oxoethyl] 5-methoxy-2,3-dihydro-1,4-benzodioxine-7-carboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C18H15F2NO6
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