Using COc1cnc2c(NCc3nnc4ccc(Cl)nn34)ccnc2c1, C#C[Si](CC)(CC)CC to produce CC[Si](C#Cc1ccc2nnc(CNc3ccnc4cc(OC)cnc34)n2n1)(CC)CC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.