Using CCN(CC)CCCN1CCC(O)(c2ccccc2)C(C(=O)c2ccccc2)C1 to produce CCN(CC)CCCN1CC=C2C(=C(c3ccccc3)c3ccccc32)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.