You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[1-(4-hydroxy-2-methyl-5-propan-2-ylphenyl)ethenyl]-N-(1-methylindol-5-yl)acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H26N2O2
assistant