Using O, O=c1c2c(n(-c3ccccc3)c3ncccc13)OC(CBr)C2 to produce O=c1c2c(c3cccnc3n1-c1ccccc1)OC(CO)C2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.