Using Nc1cccc2nc(N[C@@H]3CCc4ccccc43)ccc12, COCCC(=O)Cl to produce COCCC(=O)Nc1cccc2nc(N[C@@H]3CCc4ccccc43)ccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.