Using CCCC[Sn](Cl)(CCCC)CCCC, CC(C)[Si](C(C)C)(C(C)C)n1cc(C[C@H]2CCCN2C)c2cc(Br)ccc21 to produce CCCC[Sn](CCCC)(CCCC)c1ccc2c(c1)c(C[C@H]1CCCN1C)cn2[Si](C(C)C)(C(C)C)C(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.