Using CC(=O)C(Br)C(=O)OC(C)(C)C, NC(=S)c1cc2ccc(O)cc2oc1=O to produce Cc1nc(-c2cc3ccc(O)cc3oc2=O)sc1C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.