You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 4-N-(4-fluoro-2-methyl-1H-indol-5-yl)-2-N-[3-(2-morpholin-4-ylethylsulfonyl)phenyl]pyrimidine-2,4-diamine into molecular formula.
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C25H27FN6O3S
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