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-[6-(4-methoxy-3-methylphenyl)sulfonyl-5,7-dihydropyrrolo[3,4-d]pyrimidin-2-yl]morpholine .
user
C18H22N4O4S
assistant