You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (5R,6R,8R)-3-methyl-8-phenyl-6-propan-2-yl-7,9-dioxa-1-azaspiro[4.5]dec-3-en-2-one into molecular formula.
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C17H21NO3
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