Using CCOC(=O)C=Cc1cc(C=CC(=O)OCC)cc(Cc2cccnc2)c1 to produce CCOC(=O)CCc1cc(CCC(=O)OCC)cc(Cc2cccnc2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.