Using CCOC(=O)c1ccc2nc(C)n(Cc3ccc(C=Cc4ccccc4)cc3)c2c1 to produce CCOC(=O)c1ccc2nc(C)n(Cc3ccc(CCc4ccccc4)cc3)c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.