You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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[2-oxo-2-(prop-2-ynylamino)ethyl] (E)-2-cyano-3-(1-cyclopropyl-2,5-dimethylpyrrol-3-yl)prop-2-enoate is the IUPAC name of a molecule. Please give its molecular formula.
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C18H19N3O3
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