Using BrCCCC1CCOC1, CCCCNc1nc(N)c2nc(OC)nc-2[nH]1 to produce CCCCNc1nc(N)c2nc(OC)n(CCCC3CCOC3)c2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.