Using [Zr+4], [Li]c1cccc2c1Cc1c-2n(C)c2ccc(C)cc12 to produce Cc1ccc2c(c1)c1c(n2C)-c2cccc([Zr+2]c3cccc4c3Cc3c-4n(C)c4ccc(C)cc34)c2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.