Using CC1=C(C)C(C)C([Zr](C)(C)(=[SiH2])C2C=C(c3ccc(C(C)(C)C)cc3)c3ccccc32)=C1C to produce CC1=C(C)C(C)C([Zr](C)(C)(=[SiH2])C2C=C(c3ccccc3)c3ccccc32)=C1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.