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 6-[1-(dimethylamino)-3-methylbutan-2-yl]-5-thiophen-3-yl-4,6-diazaspiro[2.4]heptan-7-one .
user
C16H25N3OS
assistant