Using CCOC(=O)C(CC(=O)O)Cc1cccc2ccccc12, NCCc1c[nH]c2ccccc12 to produce CCOC(=O)C(CC(=O)NCCc1c[nH]c2ccccc12)Cc1cccc2ccccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.