Using CCc1nc2c(N)nc3cc(O)ccc3c2s1, BrCCc1c[nH]c2ccccc12 to produce CCc1nc2c(N)nc3cc(OCCc4c[nH]c5ccccc45)ccc3c2s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.