You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named N-(3-piperidin-1-ylpropyl)-3-(3,6,7-trimethyl-2-oxoquinoxalin-1-yl)propanamide is given. What is its corresponding molecular formula?
user
C22H32N4O2
assistant