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