Which formula has thial as a chemical class?
CREATE TABLE table_name_7 (formula VARCHAR, chemical_class VARCHAR)
SELECT formula FROM table_name_7 WHERE chemical_class = "thial"
### Context: CREATE TABLE table_name_7 (formula VARCHAR, chemical_class VARCHAR) ### Question: Which formula has thial as a chemical class? ### Answer: SELECT formula FROM table_name_7 WHERE chemical_class = "thial"