Using O=CCCCC12CCC(c3cccc(Oc4ccccc4)c3)(CC1)OC2, [Li]CCCC to produce C=CCCCC12CCC(c3cccc(Oc4ccccc4)c3)(CC1)OC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.