Using COC(=O)Cc1ccccc1CCc1nc(Nc2cnn(C)c2)ncc1C to produce Cc1cnc(Nc2cnn(C)c2)nc1CCc1ccccc1CC(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.