You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-methyl-6-[(2S)-2-[(thiophen-2-ylmethylamino)methyl]pyrrolidin-1-yl]pyrimidin-4-amine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C15H21N5S
assistant