You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[3-[[(2R)-1-ethylpyrrolidin-2-yl]methyl]-2,4-dihydro-1H-1,3,5-triazin-6-yl]propane-2-sulfonamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C13H27N5O2S
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