You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named 7-[3-(4-acetyl-1-methyl-4-phenylpiperidin-1-ium-1-yl)propoxy]-3,4-dihydro-1H-quinolin-2-one;iodide is given. What is its corresponding molecular formula?
user
C26H33IN2O3
assistant