Using CCC(C)c1ccc(-n2c(-c3cc(C)c(O)c(C)c3)nc3ccncc3c2=O)cc1, CC(C)(C)[Si](C)(C)OCCBr to produce CCC(C)c1ccc(-n2c(-c3cc(C)c(OCCO[Si](C)(C)C(C)(C)C)c(C)c3)nc3ccncc3c2=O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.