Using CC(C)(C)OC(=O)NCCO, CC(=O)c1cc(Cl)c(C#N)c(I)c1O to produce CC(=O)c1cc(Cl)c(C#N)c(I)c1OCCNC(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.