Using O=C(O)CNC(=O)OCc1ccccc1, CC(C)C1NCC(=O)N1 to produce CC(C)C1NC(=O)CN1C(=O)CNC(=O)OCc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.