Using OCCBr, COc1ccc(F)c(F)c1C(=O)c1cnc(N[C@H]2CC[C@H](NCCO)CC2)nc1N to produce COc1ccc(F)c(F)c1C(=O)c1cnc(N[C@H]2CC[C@H](N(CCO)CCO)CC2)nc1N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.