You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[3-(5,7-dimethyl-2,3-diphenylindol-1-yl)-2-hydroxypropyl]-1,1-dioxo-1,2-benzothiazol-3-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C32H28N2O4S
assistant