Using CC(=O)O[C@H]1CC[C@@H](c2nc(Br)c3c(C)nccn32)CC1 to produce Cc1nccn2c1c(Br)nc2[C@H]1CC[C@@H](O)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.