Using C=CCc1c(C(=O)OCC)sc2c1c(=O)n(C)c(=O)n2C to produce C=CCc1c(C(=O)O)sc2c1c(=O)n(C)c(=O)n2C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.