You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-(3-aminoprop-1-ynyl)-N-[1-(ethylamino)-1-oxopropan-2-yl]thiophene-2-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C13H17N3O2S
assistant