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