Using CC(C)(C)OC(=O)Nc1cccc(CC2CC(NC(=O)OC(C)(C)C)CC2O)n1 to produce CC(C)(C)OC(=O)Nc1cccc(CC2CC(NC(=O)OC(C)(C)C)CC2=O)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.