Using CCOC(=O)c1sc(N2CCNC2=O)cc1C, CC(C)(C)[Si](C)(C)OCCBr to produce CCOC(=O)c1sc(N2CCN(CCO[Si](C)(C)C(C)(C)C)C2=O)cc1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.