Using [Li]CCCC, CCN1CCC(=O)c2cccc(CSc3nc4ccccc4[nH]3)c21 to produce C=C1CCN(CC)c2c(CSc3nc4ccccc4[nH]3)cccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.