You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(2S)-1-(1,3-benzodioxol-5-ylmethylamino)-1-oxopropan-2-yl] 5,6-dihydro-4H-cyclopenta[b]thiophene-2-carboxylate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H19NO5S
assistant