Using CC(C)(C)OC(=O)NS(=O)(=O)ON1C(=O)CCC1=O, COCCO to produce COCCN(C(=O)OC(C)(C)C)S(=O)(=O)ON1C(=O)CCC1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.