Using C[C@H](c1cccc2ccccc12)N(C[C@H]1CN(C(=O)CCC(=O)O)C[C@@H]1c1ccccc1)C(=O)OC(C)(C)C to produce C[C@@H](NC[C@H]1CN(C(=O)CCC(=O)O)C[C@@H]1c1ccccc1)c1cccc2ccccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.