Using C1COCCN1, CC(C)(C)OC(=O)Nc1ccc(COS(C)(=O)=O)nc1 to produce CC(C)(C)OC(=O)Nc1ccc(CN2CCOCC2)nc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.