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-methyl-N-[3-[[2-(2-morpholin-4-yl-2-oxoethyl)sulfanylacetyl]amino]phenyl]propanamide using the IUPAC nomenclature.
user
C18H25N3O4S
assistant