Using CCOC(=O)c1n[nH]c2c1C=CC(c1ccccc1)(c1ccccc1)C2 to produce O=C(O)c1n[nH]c2c1C=CC(c1ccccc1)(c1ccccc1)C2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.