You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (2-methoxyphenyl)-[(2S)-2-[1-methyl-4-(3-methyl-1,2-oxazol-5-yl)pyrazol-3-yl]piperidin-1-yl]methanone by IUPAC nomenclature, provide its molecular formula.
user
C21H24N4O3
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