You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (2R)-2-[(2-aminoacetyl)-[2-[4-[(2R,3R)-1-(4-fluorophenyl)-3-[2-(4-fluorophenyl)-2-hydroxyethyl]sulfanyl-4-oxoazetidin-2-yl]phenoxy]acetyl]amino]-3-methylsulfanylpropanoic acid .
user
C31H31F2N3O7S2
assistant