You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
5-[2-(methanesulfonamido)ethyl]-N-(2-methyl-6-propan-2-ylphenyl)thiophene-2-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H24N2O3S2
assistant