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