You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 5-[[(2R)-1-amino-1-oxobutan-2-yl]amino]-3-[(2-methoxy-1,3-dimethyl-2H-pyridin-5-yl)amino]pyrazine-2-carboxamide into its molecular formula.
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C17H25N7O3
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