You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
The molecule is a rsv inhibitor. Use the above information to create a molecule.
user
O=C(Nc1ccc(C(=O)N2CCc3cc(Br)oc3-c3ccc(F)cc32)cc1)c1cccnc1N1CC2(CCOCC2)C1
assistant