Using CC1C(=O)N(COCC[Si](C)(C)C)N=C2COc3ccc(N[C@@]4(C)CCN(C(=O)OC(C)(C)C)C4)cc3N21 to produce CC1C(=O)NN=C2COc3ccc(N[C@@]4(C)CCN(C(=O)OC(C)(C)C)C4)cc3N21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.