You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[4-(3,5-dimethylpyrazol-1-yl)phenyl]methyl 2,4-dimethyl-1,3-oxazole-5-carboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C18H19N3O3
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