Using BrCc1ccccc1, CC(C)(C)C(=O)SCC1CCCCCCCSC[C@@H](C(=O)O)NC1=O to produce CC(C)(C)C(=O)SCC1CCCCCCCSC[C@@H](C(=O)OCc2ccccc2)NC1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.