Using CC(C)CN(Cc1ccc2c(c1)C(O)CCCC2)C(=O)C1CN(C(=O)OC(C)(C)C)CCO1 to produce CC(C)CN(Cc1ccc2c(c1)CCCCC2)C(=O)C1CN(C(=O)OC(C)(C)C)CCO1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.