You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named (2-ethoxy-6-azaspiro[3.4]octan-6-yl)-[4-[3-(trifluoromethyl)pyrazol-1-yl]phenyl]methanone is given. What is its corresponding molecular formula?
user
C20H22F3N3O2
assistant