You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule N-(5-cyclopropyl-3-methyl-1,2-oxazol-4-yl)-2-(3-methyl-3,4-dihydro-1H-isoquinolin-2-yl)-2-oxoacetamide into molecular formula.
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C19H21N3O3
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