Using CCOC(=O)CCCCCn1cc(C(=O)c2cccc3ccccc23)c2ccccc21 to produce O=C(O)CCCCCn1cc(C(=O)c2cccc3ccccc23)c2ccccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.