You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(4-tert-butylphenyl)-[(3S)-1-(4-methyl-1H-pyrrole-2-carbonyl)piperidin-3-yl]methanone The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H28N2O2
assistant