You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[4-[4-[6-chloro-2-[(3-ethyl-2,3,3a,5,6,6a-hexahydrofuro[3,2-b]furan-6-yl)oxy]-1H-imidazo[4,5-b]pyridin-5-yl]phenyl]phenyl]-1H-1,2,4-triazol-5-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C28H25ClN6O4
assistant