Using CC(C)[Si](C(C)C)(C(C)C)n1cc(Cc2ccc(Cl)nc2)c2cccnc21, CC(C)[Mg]Cl to produce CC(C)c1ccc(Cc2cn([Si](C(C)C)(C(C)C)C(C)C)c3ncccc23)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.