Using COC(=O)CCSC(c1ccccc1CCCCCCCCc1ccco1)C(O)C(=O)OC to produce O=C(O)CCSC(c1ccccc1CCCCCCCCc1ccco1)C(O)C(=O)O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.