Using COC(=O)CN1CSC=C(N2C(=O)c3ccccc3C2=O)C1=O to produce O=C(O)CN1CSC=C(N2C(=O)c3ccccc3C2=O)C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.