You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule (2S)-3-[(2R)-butan-2-yl]-2-[4-[ethyl(2-hydroxyethyl)amino]-2-methylphenyl]-1,2-dihydroquinazolin-4-one ?
user
C23H31N3O2
assistant