You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named cyclobutyl-[(7S)-8-methyl-7-(oxazinane-2-carbonyl)-5-oxa-2,8-diazaspiro[3.5]nonan-2-yl]methanone by IUPAC nomenclature, provide its molecular formula.
user
C17H27N3O4
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