You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-cyclopropyl-2-[4-[2-[methyl(thiophen-2-ylmethyl)amino]-2-oxoethyl]piperazin-1-yl]-2-oxoacetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C17H24N4O3S
assistant