Using O=C(c1ccccc1)c1ccccc1, C1=CCC(C2C3CC4CC(C3)CC2C4)=C1 to produce C1=CC(=C(c2ccccc2)c2ccccc2)C=C1C1C2CC3CC(C2)CC1C3, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.