text: Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
  ### Context:
  CREATE TABLE table_name_66 (group VARCHAR, formula VARCHAR)
  ### Question:
  Which group has the RNCS formula?
  ### Answer:
  SELECT group FROM table_name_66 WHERE formula = "rncs"