You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(4-cyano-3-fluorophenyl)-[[5-(6-methoxypyridin-3-yl)thiophen-2-yl]sulfonylamino]methyl]phosphonic acid is the IUPAC name of a molecule. Please give its molecular formula.
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C18H15FN3O6PS2
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