Using CC(=O)c1ccc2c(c1)N(CCCCCCO)c1ccccc1S2, O=[Cr](=O)([O-])O[Cr](=O)(=O)[O-] to produce CC(=O)c1ccc2c(c1)N(CCCCCC(=O)O)c1ccccc1S2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.