You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 2-(4,4-difluoropiperidin-1-yl)-6-methoxy-7-(3-pyrrolidin-1-ylpropoxy)-N-thiophen-2-ylquinazolin-4-amine into molecular formula.
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C25H31F2N5O2S
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