You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(2S)-1-methoxypropan-2-yl] (E)-3-[5-chloro-1-(2,5-dimethylphenyl)-3-methylpyrazol-4-yl]-2-cyanoprop-2-enoate is the IUPAC name of a molecule. Please give its molecular formula.
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C20H22ClN3O3
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