Using CCOC(=O)c1cc2c([nH]1)C[C@@H]1[C@H](CCc3ccccc3)[C@H]21 to produce O=C(O)c1cc2c([nH]1)C[C@@H]1[C@H](CCc3ccccc3)[C@H]21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.