Using CCOC(=O)Cn1c(-c2ccc(OC)cc2OC)cc(=O)[nH]c1=S to produce COc1ccc(-c2cc(=O)[nH]c(=S)n2CC(=O)O)c(OC)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.