Using CCOC(=O)C#CC1(NC(=O)OC(C)(C)C)CC1, CCCCOCN(Cc1ccccc1)C[Si](C)(C)C to produce CCOC(=O)C1=C(C2(NC(=O)OC(C)(C)C)CC2)CN(Cc2ccccc2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.