Using CS(=O)(=O)c1ccc2c(c1)cc(C1=CCOCC1)n2Cc1ccc(F)cc1 to produce CS(=O)(=O)c1ccc2c(c1)cc(C1CCOCC1)n2Cc1ccc(F)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.