Using O=C1C=CC(=O)c2ccccc21, CCCCCCCCCCCCCCCCn1cccc1 to produce CCCCCCCCCCCCCCCCn1cccc1C1=CC(=O)c2ccccc2C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.