You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[4-[2-[3-[2-[di(propan-2-yl)amino]ethyl]-4-oxoquinazolin-2-yl]sulfanylacetyl]phenyl]propanamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C27H34N4O3S
assistant