You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[4-(2,3-dimethylphenyl)piperazin-1-yl]-[1-(5-phenyl-1,3,4-oxadiazol-2-yl)piperidin-4-yl]methanone The above is the IUPAC name of a molecule. Write its molecular formula.
user
C26H31N5O2
assistant