Using [Li]CCCC, CC1CC(c2ncc3nccc-3[nH]2)CC(c2ccccc2)N1 to produce CC1CC(c2ncc3nccc-3[nH]2)C(C)C(c2ccccc2)N1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.