Using C[Si](C)(C)c1oc(N2C[C@@]3(CN4CCC3CC4)OC2=O)cc1Br to produce O=C1O[C@]2(CN3CCC2CC3)CN1c1cc(Br)co1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.