Using CCCC(O)(CCC)c1c(CC)nc2n1CCN2c1c(C)cc(C)cc1C to produce CCC=C(CCC)c1c(CC)nc2n1CCN2c1c(C)cc(C)cc1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.