Using CCOC(=O)COc1cccc2c1CCCC2COC(=O)NN(c1ccccc1)c1ccccc1 to produce O=C(O)COc1cccc2c1CCCC2COC(=O)NN(c1ccccc1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.