Using ClCCl, O=C1c2ccccc2C(=O)N1C(c1ccc2ncc(-c3ccccc3)nc2c1)c1nccnc1Cl to produce Clc1nccnc1NCc1ccc2ncc(-c3ccccc3)nc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.