Using CN(Cc1cccc(C(=O)N2CC(=O)Nc3ccccc32)c1)C(=O)OC(C)(C)C to produce CNCc1cccc(C(=O)N2CC(=O)Nc3ccccc32)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.