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 [(1S)-4-(methylamino)-1-[2-[2-[3-(4-methylpent-2-ynylamino)-3-oxopropoxy]ethoxy]ethoxy]butyl] thiocyanate using the IUPAC nomenclature.
user
C19H33N3O4S
assistant