Using COC(=O)C(=Cc1cccnc1C1CC1)CC(=O)O, CC(=O)[O-] to produce COC(=O)c1cc(OC(C)=O)c2ccnc(C3CC3)c2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.