You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name 4-[[(2R,3S,4R,5S)-3-(3-chloro-2-fluorophenyl)-4-(4-chloro-2-fluorophenyl)-4-cyano-5-(2,2-dimethylpropyl)-1-methylpyrrolidine-2-carbonyl]amino]-1-ethylpyrrole-2-carboxylic acid ?
user
C31H32Cl2F2N4O3
assistant