Using Nc1ccc2nc(N[C@@H]3CCc4ccccc43)ccc2c1, CN(CC=O)C(=O)OC(C)(C)C to produce CN(CCNc1ccc2nc(N[C@@H]3CCc4ccccc43)ccc2c1)C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.