You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
tert-butyl (2S)-2-[(2,6-dimethylphenyl)carbamoyl]-4-(2-methoxy-2-oxoethylidene)piperidine-1-carboxylate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H30N2O5
assistant