Using Cc1cc(Br)cnc1N1CCN(C(=O)OC(C)(C)C)CC1, CB(O)O to produce Cc1cnc(N2CCN(C(=O)OC(C)(C)C)CC2)c(C)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.