You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-(4-chlorophenyl)-2-[(5-chloropyridin-2-yl)methyl]-4-fluoro-6-(2-hydroxypropan-2-yl)-3-[(3R)-oxolan-3-yl]oxyisoindol-1-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C27H25Cl2FN2O4
assistant