Using CCOC(=O)c1c(C)c(C(=O)c2ccc(N)c(OC)c2)n2ccccc12 to produce COc1cc(C(=O)c2c(C)c(C(=O)O)c3ccccn23)ccc1N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.