Using CCOC(=O)C1CCCc2c1c1ccccc1n2CCOCc1ccccc1 to produce O=C(O)C1CCCc2c1c1ccccc1n2CCOCc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.