Using O=C1CCCc2cc(OCCn3ccnc3)ccc21, COc1ccccc1C=O to produce COc1ccccc1C=C1CCc2cc(OCCn3ccnc3)ccc2C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.