Using C1COCCN1, CC(C)(C)OC(=O)NC(C(=O)O)c1ccccc1 to produce CC(C)(C)OC(=O)NC(C(=O)N1CCOCC1)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.