Using CSc1cn(-c2ncc(Br)cn2)c2cc(C(=O)O)ccc12, CC(C)(C)OC(=O)N[C@@H]1CCNC1 to produce CSc1cn(-c2ncc(Br)cn2)c2cc(C(=O)N3CC[C@@H](NC(=O)OC(C)(C)C)C3)ccc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.