Using CCOC(=O)CCNC(=O)Nc1nc(C)c(-c2ccc(S(=O)(=O)N(C)C)cc2)s1 to produce Cc1nc(NC(=O)NCCC(=O)O)sc1-c1ccc(S(=O)(=O)N(C)C)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.