Using C1CCNC1, Brc1cnc2[nH]c(-c3ccc(OCC4CO4)cc3)nc2c1 to produce OC(COc1ccc(-c2nc3cc(Br)cnc3[nH]2)cc1)CN1CCCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.