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-[3-[5-hydroxy-1,3,7-trioxo-6-[3-(2-phenylethynyl)phenyl]-8,8a-dihydro-5H-pyrrolo[3,4-f]isoindol-2-yl]phenoxy]benzene-1,2-dicarbonitrile .
user
C38H22N4O5
assistant