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-[(3R)-1-[(4S)-4-(4-chlorophenyl)-4-hydroxy-3,3-dimethylpiperidin-1-yl]-3-methyl-4-oxobutan-2-yl]-1-oxaspiro[3.4]octane-6-carboxamide into molecular formula.
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C26H37ClN2O4
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