Using O=C(O)c1cc2cc(Cl)ccc2[nH]1, CCOC(=O)[C@@H]1CC[C@@H](NC(=O)c2nc3c(s2)CN(C)CC3)[C@@H](NC(=O)OC(C)(C)C)C1 to produce CCOC(=O)[C@@H]1CC[C@@H](NC(=O)c2nc3c(s2)CN(C)CC3)[C@@H](NC(=O)c2cc3cc(Cl)ccc3[nH]2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.