Using C=Cc1cccc2c1CN(C(=O)O[C@@H]1C[C@@H](C(=O)OC)N(C(=O)OC(C)(C)C)C1)C2 to produce C=Cc1cccc2c1CN(C(=O)O[C@H]1CN[C@H](C(=O)OC)C1)C2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.