Using CCOC(=O)c1cnn2c(NCc3ccccc3)c(C(=O)OC)cnc12 to produce CCOC(=O)c1cnn2c(NCc3ccccc3)c(C(=O)O)cnc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.