You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
5-morpholin-4-yl-6-[5-[[(3S)-2-oxo-5-phenyl-1,3-dihydrobenzo[e][1,4]diazepin-3-yl]amino]-1,3,4-oxadiazol-2-yl]pyridine-3-carbonitrile The above is the IUPAC name of a molecule. Write its molecular formula.
user
C27H20N8O3
assistant