Using O=Cc1c2ccccc2cc2ccccc12, CC(=O)c1c2ccccc2cc2ccccc12 to produce O=C(C=Cc1c2ccccc2cc2ccccc12)c1c2ccccc2cc2ccccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.