Using OB(O)c1ccsc1, CC(C)(C)OC(=O)N1CCN(c2nc(Br)cn3cnnc23)CC1 to produce CC(C)(C)OC(=O)N1CCN(c2nc(-c3ccsc3)cn3cnnc23)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.