Using CC(C)CC=O, CC(C)(C)[Si](C)(C)OCC(N)c1cc(Br)cs1 to produce CC(C)CCNC(CO[Si](C)(C)C(C)(C)C)c1cc(Br)cs1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.