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-methyl-N-[2-(oxan-4-yl)ethyl]-2-[3-oxo-1-(thiophen-2-ylmethyl)piperazin-2-yl]acetamide .
user
C19H29N3O3S
assistant