You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[1-[7-chloro-3-(4-methylphenyl)-4-oxoquinazolin-2-yl]ethyl]-N-(furan-2-ylmethyl)-3-nitrobenzamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C29H23ClN4O5
assistant