Using CC(C)(C)OC(=O)N1CCC(CCOS(C)(=O)=O)CC1, O=C1NC(=O)c2ccccc21 to produce CC(C)(C)OC(=O)N1CCC(CCN2C(=O)c3ccccc3C2=O)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.