Using CCOC(C)=O, CCCn1c2ccccc2c2cc(C(C)=O)ccc21 to produce CCCn1c2ccccc2c2cc(C(=O)CC(C)=O)ccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.