Using CCOC(=O)c1c(C)[nH]c(C=O)c1CCCS(C)(=O)=O to produce Cc1[nH]c(C=O)c(CCCS(C)(=O)=O)c1C(=O)O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.