You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Suppose there is a molecule that meets the following description: The molecule is a rsv inhibitor and belongs to the anti viral class of molecules. Please write the SMILES representation of it.
user
COC(=O)c1cc(C2(C)COC(C)(C)OC2)n2nc(Br)cc2n1
assistant