Using O=c1cc(N2CCOCC2)oc2c(B(O)O)csc12, COC(=O)c1scc(Br)c1O to produce COC(=O)c1scc(-c2csc3c(=O)cc(N4CCOCC4)oc23)c1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.