You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R)-N-[2-[(2R)-butan-2-yl]pyrazol-3-yl]-2-[1-(2,5-dimethylphenyl)tetrazol-5-yl]sulfanylpropanamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H25N7OS
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