You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[2-(2,3-dimethylanilino)-2-oxoethyl]-N-[[(2S)-oxolan-2-yl]methyl]thiophene-2-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H24N2O3S
assistant