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 4-[7-(2-methylsulfanylphenyl)quinoxalin-2-yl]morpholine;1-[3-(3-morpholin-4-ylquinoxalin-6-yl)phenyl]ethanone .
user
C39H38N6O3S
assistant