Using CC(C)(C)OC(=O)Cn1c(SCCNC(=O)OC(C)(C)C)nc2ccccc21 to produce CC(C)(C)OC(=O)NCCSc1nc2ccccc2n1CC(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.