Using BrCCC1OCCO1, CS(=O)(=O)c1cccc(C2CCNCC2)c1F to produce CS(=O)(=O)c1cccc(C2CCN(CCC3OCCO3)CC2)c1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.