You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I need a molecule that meets the following conditions: It belongs to the anti viral class of molecules. Please represent the molecule in SMILES.
user
C=C(c1cccnc1)C1(C(F)(F)F)OCC(=O)Nc2ccc(Cl)cc21
assistant