Using OCCBr, Cc1ccc2c(c1)c1c(n2CC(O)c2ccncc2)CCNC1 to produce Cc1ccc2c(c1)c1c(n2CC(O)c2ccncc2)CCN(CCO)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.