Using C1COCCO1, CCCCNc1nc(N)nc(C)c1Cc1cc(CC(=O)O)ccc1OC to produce CCCCNc1nc(N)nc(C)c1Cc1cc(CC(=O)OC)ccc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.