Using CC(C)(C)OC(=O)N1c2c(cc(Br)c3c2CCC3)C(C)(C)C(=O)C1(C)C to produce CC1(C)Nc2c(cc(Br)c3c2CCC3)C(C)(C)C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.