Using Cc1nc(-n2c(C)ccc2C)nc(N[C@H]2CC[C@@H](OCCO)CC2)c1Br to produce Cc1nc(N)nc(N[C@H]2CC[C@@H](OCCO)CC2)c1Br, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.