You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-(2,5-dimethylphenyl)-N-[(2S,3S)-2-(1-ethylimidazol-2-yl)oxolan-3-yl]acetamide into its molecular formula.
user
C19H25N3O2
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