Using CC(C)(C)OC(=O)NCCCO, COc1cc(-c2cn(S(=O)(=O)c3ccccc3)c3ncccc23)nc(NCc2cccc(O)c2)n1 to produce COc1cc(-c2cn(S(=O)(=O)c3ccccc3)c3ncccc23)nc(NCc2cccc(OCCCNC(=O)OC(C)(C)C)c2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.