Using O=S1(=O)CCC(Br)C1, CC1(C)OB(c2cn[nH]c2)OC1(C)C to produce CC1(C)OB(c2cnn(C3CCS(=O)(=O)C3)c2)OC1(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.