Using CC(C)(C)OC(=O)NCCCC[C@H](NC(=O)OC(C)(C)C)C(=O)N(Cc1ccccc1)[C@@H](CCCCNC(=O)OC(C)(C)C)C(=O)O to produce CC(C)(C)OC(=O)NCCCC[C@H](NC(=O)[C@H](CCCCNC(=O)OC(C)(C)C)NC(=O)OC(C)(C)C)C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.