text: <unk>  is a colourless poisonous liquid with a boiling point of 23.5°C and a melting point of -81°C. At 0°C<unk>  is converted to cyamelide.
  In water,<unk>  hydrolyses to carbon dioxide and ammonia.<unk>  (H-O-C≡N) is an isomer of fulminic acid (H-C=N-O).
  A tautomer exists for<unk> , H-N=C=O, isocyanic acid.
  It forms in a reaction between potassium cyanate and formic acid.
  The trimer of<unk>  is cyanuric acid.<unk>  is the simplest stable chemical compound that contains carbon, hydrogen, nitrogen, and oxygen, the four most commonly-found atoms in organic chemistry (fulminic acid is not stable).
option_0: Cyanic acid
option_1: Stearic acid
option_2: Oleic acid
option_3: Choline
option_4: Linoleic acid
option_5: Tartaric acid
option_6: Meconic acid
option_7: Cholesterol