You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named 3-[6-(aminomethyl)-6,6a,9,10-tetrahydro-5H-pyrido[1,2-a][1,5]naphthyridin-2-yl]-N,4-dimethylaniline is given. What is its corresponding molecular formula?
user
C21H26N4
assistant