Using CC(C)(C)OC(=O)NCC(=O)O, COC(=O)c1ccc(N)cc1 to produce COC(=O)c1ccc(NC(=O)CNC(=O)OC(C)(C)C)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.