Using CCCCNc1cc(C(=O)O)cc(S(N)(=O)=O)c1Oc1ccccc1, CC(C)(C)C(=O)OCCl to produce CCCCNc1cc(C(=O)OCOC(=O)C(C)(C)C)cc(S(N)(=O)=O)c1Oc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.