Question: What is the molecular formula of the chemical for which Nylander's test looks?
Context: Nylander's test is a chemical test used for detecting the presence of reducing sugars. Glucose or fructose reduces bismuth oxynitrate to bismuth under alkaline conditions.  When Nylander's reagent, which consists of bismuth nitrate, potassium sodium tartrate and potassium hydroxide, is added to a solution with reducing sugars, a black precipitate of metallic bismuth is formed. Chemical refrigerants are assigned an R number which is determined systematically according to molecular structure.  Common refrigerants are frequently referred to as Freon (a registered trademark of DuPont).  The following is a list of refrigerants with their Type/Prefix, ASHRAE designated numbers, IUPAC chemical name, molecular formula, CAS registry number / Blend Name, Atmospheric Lifetime in years, Semi-Empirical Ozone depletion potential, net Global warming potential over a 100-year time horizon, Occupational exposure limit/Permissible exposure limit in parts per million (volume per volume) over a time-weighted average (TWA) concentration for a normal eight-hour work day and a 40-hour work week, ASHRAE 34 Safety Group in Toxicity & Flammability (in Air @ 60 °C & 101.3 kPa) classing, Refrigerant Concentration Limit / Immediately Dangerous to Life or Health in parts per million (volume per volume) & grams per cubic meter, Molecular mass in Atomic mass units, Normal Boiling Point (or Bubble & Dew Points for the Zeotrope(400)-series)(or Normal Boiling Point & Azeotropic Temperature for the Azeotrope(500)-series) at 101,325 Pa (1 atmosphere) in degrees Celsius, Critical Temperature in degrees Celsius and Critical Pressure (absolute) in kiloPascals. Pentacyanocyclopentadiene is a derivative of cyclopentadiene with five cyano groups with the molecular formula CH(CN).  The corresponding anion, pentacyanocyclopentadienide, is a ligand with the molecular formula C(CN).  In contrast to other anions based on a C ring unit it binds to metals through the pendant cyano groups rather than the C ring.  The anion was first synthesised by Webster in the 1960s and its conjugate acid much later on.  More recently Wright has discovered its extensive coordination chemistry. Isoxathion is a molecular chemical with the molecular formula CHNOPS.  It is an insecticide, specifically an isoxazole organothiophosphate insecticide. Methyl 2-fluoroacrylate (MFA) is a chemical compound classified as an acrylate ester.  The molecular formula is CHFO and the molecular weight is 104.08.  The systematic name of this chemical is methyl 2-fluoroprop-2-enoate. Glucose is a simple sugar with the molecular formula CHO.  Glucose circulates in the blood of animals as blood sugar.  It is made during photosynthesis from water and carbon dioxide, using energy from sunlight.  It is the most important source of energy for cellular respiration.  Glucose is stored as a polymer, in plants as starch and in animals as glycogen. Phthalide is an organic chemical compound with the molecular formula CHO.  It is a lactone that serves as the core chemical structure for a variety of more complex chemical compounds including dyes (such as phenolphthalein), fungicides (such as tetrachlorophthalide, often referred to simply as "phthalide") and natural oils (such as butylphthalide). In stereochemistry, stereoisomers are isomeric molecules that have the same molecular formula and sequence of bonded atoms (constitution), but differ in the three-dimensional orientations of their atoms in space.  This contrasts with structural isomers, which share the same molecular formula, but the bond connections or their order differs.  By definition, molecules that are stereoisomers of each other represent the same structural isomer. The structural formula of a chemical compound is a graphic representation of the molecular structure, showing how the atoms are arranged.  The chemical bonding within the molecule is also shown, either explicitly or implicitly.  Unlike chemical formulas, which have a limited number of symbols and are capable of only limited descriptive power, structural formulas provide a complete geometric representation of the molecular structure.  For example, many chemical compounds exist in different isomeric forms, which have different enantiomeric structures but the same chemical formula.  A structural formula is able to indicate arrangements of atoms in three dimensional space in a way that a chemical formula may not be able to do. Molecular mass or molecular weight is the mass of a molecule.  It is calculated as the sum of the atomic weights of each constituent element multiplied by the number of atoms of that element in the molecular formula.  The molecular mass of small to medium size molecules, measured by mass spectrometry, determines stoichiometry.  For large molecules such as proteins, methods based on viscosity and light-scattering can be used to determine molecular mass when crystallographic data are not available.
Answer: CHO