Using CCOC(=O)Cc1coc2c(OC)ccc(C(=O)Cc3c(Cl)cncc3Cl)c12 to produce CCOC(=O)Cc1coc2c(OC)ccc(C(=O)Cc3ccncc3)c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.