You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(Z)-3-[[(1R,2R,4R)-2-bicyclo[2.2.1]heptanyl]amino]-3-oxo-1-thiophen-2-ylprop-1-en-2-yl]benzamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H22N2O2S
assistant