Using CC(C)(C)OC(=O)NCCCCCC(=O)O, NNC(=O)OCC1c2ccccc2-c2ccccc21 to produce CC(C)(C)OC(=O)NCCCCCC(=O)NNC(=O)OCC1c2ccccc2-c2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.