Using COc1nc2cc(C)c(Cl)c(N(CCCO)S(C)(=O)=O)c2nc1OC, O=[Cr](=O)([O-])O[Cr](=O)(=O)[O-] to produce COc1nc2cc(C)c(Cl)c(N(CCC(=O)O)S(C)(=O)=O)c2nc1OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.