Using CC(C)(C)OC(=O)NC/C=C/c1cn2c(=O)[nH]nc2c2cc(Cl)ccc12 to produce CC(C)(C)OC(=O)NCCCc1cn2c(=O)[nH]nc2c2cc(Cl)ccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.