Using BrB(Br)Br, CCN(CC)CCn1nc2c3c(c(N)ccc31)Sc1cc(OC)ccc1-2 to produce CCN(CC)CCn1nc2c3c(c(N)ccc31)Sc1cc(O)ccc1-2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.