You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(4S)-2-(1-methyl-1,2,4-triazole-3-carbonyl)-N-propan-2-yl-8-oxa-2-azaspiro[4.5]decane-4-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C16H25N5O3
assistant