Using ClCc1cccnc1, CCOC(=O)CCc1cn(Cc2ccc(O)c(OC)c2)nc1OCC to produce CCOC(=O)CCc1cn(Cc2ccc(OCc3cccnc3)c(OC)c2)nc1OCC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.