Using O=C1CCC(=O)N1Cl, C1C2CC3CC1CC(C2)C3=C1C2CC3CC(C2)CC1C3 to produce ClC12CC3CC(CC(C3)C1=C1C3CC4CC(C3)CC1C4)C2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.