You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (4R,7S)-4-(3-chlorophenyl)-7-(2-hydroxyphenyl)-3-methyl-6,7,8,9-tetrahydro-4H-[1,2]oxazolo[5,4-b]quinolin-5-one .
user
C23H19ClN2O3
assistant