Using Cc1ccc(C(O)(Cc2nnnn2C)c2ccc(C)cc2C)c(C)c1 to produce Cc1ccc(C(=Cc2nnnn2C)c2ccc(C)cc2C)c(C)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.