Using CCCCCCCCCCCCCCBr, CCOC(=O)C(NC(C)=O)C(=O)OCC to produce CCCCCCCCCCCCCCC(NC(C)=O)(C(=O)OCC)C(=O)OCC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.