You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[3-(4-methoxyphenyl)piperazin-1-yl]-[3-(4-methyl-1,3-thiazol-2-yl)phenyl]methanone The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H23N3O2S
assistant