Using CCCCOC(=O)NC(CS(=O)(=O)CCNC(=O)OCc1ccccc1)C(=O)OC(C)(C)C to produce CCCCOC(=O)NC(CS(=O)(=O)CCN)C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.