Using O=C(Cl)CN1C(=O)c2ccccc2C1=O, CC1(C)OC(=O)CC(=O)O1 to produce COC(=O)CC(=O)CN1C(=O)c2ccccc2C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.