Using CC(C)(C)OC(=O)N[C@H](CCCI)C(=O)OC(C)(C)C, Cn1c(=O)[nH]c(=O)c2ccccc21 to produce Cn1c(=O)n(CCC[C@@H](NC(=O)OC(C)(C)C)C(=O)OC(C)(C)C)c(=O)c2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.