You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance N-[2-(1-benzothiophen-3-yl)ethyl]-4-(2-oxo-2-piperidin-1-ylethyl)piperazine-1-carboxamide .
user
C22H30N4O2S
assistant