Using BrCC1CCOCC1, COc1nc2c(N)nc(OCC3CCCCC3)nc2[nH]1 to produce COc1nc2c(N)nc(OCC3CCCCC3)nc2n1CC1CCOCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.