Using CCCN(CC(O)COC(Cc1ccccc1)C(=O)c1ccccc1)C(=O)OC(C)(C)C, COS(=O)(=O)OC to produce CCCN(CC(COC(Cc1ccccc1)C(=O)c1ccccc1)OC)C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.