Using CC1=C(C)C(=O)C(C(=CCCCCC(=O)O)c2cccnc2)=C(C)C1=O to produce CC1=C(C)C(=O)C(C(CCCCCC(=O)O)c2cccnc2)=C(C)C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.