You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[3-(6-methyl-7-pyrazol-1-yl-5H-pyrazolo[5,1-c][1,2,4]triazol-3-yl)butyl]methanesulfonamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C13H19N7O2S
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