You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl (2S)-3-methyl-2-[[4-pyrazol-1-yl-3-(2-pyridin-3-ylethynyl)benzoyl]amino]butanoate is the IUPAC name of a molecule. Please give its molecular formula.
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C23H22N4O3
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