You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[2-[[5-tert-butyl-2-(2,3-dimethylphenyl)pyrazol-3-yl]amino]-2-oxoethyl]-3-cyclopentyl-N-propan-2-ylpropanamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C28H42N4O2
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