Using C[Si](C)(C)c1cc2nnc(-c3ccccc3F)n2nc1Cl, O=C1CCC1 to produce OC1(c2cc3nnc(-c4ccccc4F)n3nc2Cl)CCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.