Using OCc1ccccc1, O=C(O)CCCCCSC1=CC(OC2CCCCO2)CC1=O to produce O=C(CCCCCSC1=CC(OC2CCCCO2)CC1=O)OCc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.