You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as 2-[2-[(pyridazin-3-ylamino)methyl]morpholin-4-yl]-N-(thiophen-2-ylmethyl)acetamide using the IUPAC nomenclature.
user
C16H21N5O2S
assistant