You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 6-[3-fluoro-4-(3,3,3-trifluoropropylsulfanylamino)phenyl]-2-(methylamino)-8-propan-2-ylpteridin-7-one into molecular formula.
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C19H20F4N6OS
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