Using COC(=O)CCCCCCCSc1nc(-c2ccccc2)c(-c2ccccc2)o1 to produce O=C(O)CCCCCCCSc1nc(-c2ccccc2)c(-c2ccccc2)o1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.