Using CCCCCNc1nc(N)nc(C)c1Cc1ccc(O)cc1OC, COC(=O)CBr to produce CCCCCNc1nc(N)nc(C)c1Cc1ccc(OCC(=O)OC)cc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.