You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance N-[2-(3,4-dimethoxyphenyl)ethyl]-4-(3-fluorobenzoyl)-1-oxa-4-azaspiro[4.5]decane-3-carboxamide .
user
C26H31FN2O5
assistant