You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[4-[(6-hydroxy-2-azaspiro[3.3]heptan-2-yl)methyl]phenyl]-3-[(4-methoxyphenyl)methyl]urea The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H27N3O3
assistant