You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule (3R)-3-[(2-chloro-4-fluorobenzoyl)-propan-2-ylamino]-6-fluoro-2,3-dihydro-1H-indene-5-carboxylic acid ?
user
C20H18ClF2NO3
assistant