You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[[2-(cyclopropylmethoxy)phenyl]methyl]-1-(7,7-dimethyl-2-oxabicyclo[3.2.0]heptan-6-yl)-3-ethylguanidine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H33N3O2
assistant