You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 1-(1,4-dioxa-8-azaspiro[4.5]decane-8-carbonyl)-N-[2-(4-fluorophenyl)ethyl]cyclopropane-1-carboxamide ?
user
C20H25FN2O4
assistant