Using CCOC(=O)c1[nH]c2ccccc2c1C(=O)c1cccc2ccccc12 to produce CCOC(=O)c1[nH]c2ccccc2c1Cc1cccc2ccccc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.