You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-butan-2-yl-8-(3-fluorobenzoyl)-4-(2-methylbenzoyl)-1-oxa-4,8-diazaspiro[4.5]decane-3-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C27H32FN3O4
assistant