Using CC(C)(C)OC(=O)NCCBr, COC(=O)c1c(O)cnc(OC(C)C)c1C to produce COC(=O)c1c(OCCNC(=O)OC(C)(C)C)cnc(OC(C)C)c1C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.