Using COC(=O)C(Cc1cccc2c1CCCC2)(Cc1cccc2c1CCCC2)C(=O)OC to produce O=C(O)C(Cc1cccc2c1CCCC2)Cc1cccc2c1CCCC2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.