You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-amino-4-methoxy-N-methyl-5-[2-(4-methylpyrazol-1-yl)ethylamino]thiophene-2-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C13H19N5O2S
assistant