You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 2-amino-N-[(2R)-1-[[1-[2-(4-ethylpiperidin-1-yl)-2-oxoethyl]imidazol-4-yl]amino]-1-oxo-3-phenylmethoxypropan-2-yl]-2-methylpropanamide into molecular formula.
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C26H38N6O4
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