Using C[C@H](C(=O)O)C(C)(C)c1ccccc1, CCOC(=O)/C(C)=C/[C@H](C(C)C)N(C)C(=O)[C@@H](N)C(C)(C)C to produce CCOC(=O)/C(C)=C/[C@H](C(C)C)N(C)C(=O)[C@@H](NC(=O)[C@@H](C)C(C)(C)c1ccccc1)C(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.