Using COC(=O)CCSC(c1ccccc1CCCCCCCCc1ccccc1)C(OC)C(=O)OC to produce COC(C(=O)O)C(SCCC(=O)O)c1ccccc1CCCCCCCCc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.