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 4-methyl-2-[4-(5-methyl-1,3-benzothiazol-2-yl)phenyl]-3a,4,7,7a-tetrahydroisoindole-1,3-dione .
user
C23H20N2O2S
assistant