Using C#CCNC(=O)c1cc(OCOCC[Si](C)(C)C)c(Br)c(OCc2ccccc2)c1 to produce Cc1cnc(-c2cc(OCOCC[Si](C)(C)C)c(Br)c(OCc3ccccc3)c2)o1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.