Using Cc1cc(NC(=O)OC(C)(C)C)sc1C(=O)O, CNCCN(C)C(=O)OC(C)(C)C to produce Cc1cc(NC(=O)OC(C)(C)C)sc1C(=O)N(C)CCN(C)C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.