Using O=C1CCC(=O)N1Br, CC(C)(C)OC(=O)N1CCC(N2C(=O)C(C)(C)Cc3ncc(Cl)cc32)CC1 to produce CC(C)(C)OC(=O)N1CCC(N2C(=O)C(C)(C)C(Br)c3ncc(Cl)cc32)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.