Using CCCCOc1cc(CCCc2ccc(OS(=O)(=O)CCCC)c(OC)c2)ccc1CCC(=O)OC to produce CCCCOc1cc(CCCc2ccc(OS(=O)(=O)CCCC)c(OC)c2)ccc1CCC(=O)O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.