Using C[Si](C)(C)I, O=c1c(OCc2ccccc2)c(-c2ncc(Cc3ccc(F)cc3)o2)nc2c(Br)cc(N3CCOCC3)cn12 to produce O=c1c(O)c(-c2ncc(Cc3ccc(F)cc3)o2)nc2c(I)cc(N3CCOCC3)cn12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.