The following is the predicted 1HNMR spectrum for an unknown compound with molecular formula C6H14O. This compound is a liquid at room temperature, is slightly soluble in water, and reacts with sodium metal with the evolution of a gas. Choose from the constitutional isomers below to assign a structure to this spectrum. (Choose the letter corresponding to the correct structure from the drop-down list provided.) Correct Structure: Assign signal number 2 (indicated as a red number on the spectrum above) to the corresponding hydrogen(s) (shown as a red lower-case letter on the structure above). If relevant, consider the possibility of diastereotopic hydrogens with slightly different. chemical shifts. (Write the letter(s) of the hydrogen (or set of equivalent hydrogens) in the box provided, If the sighal arises from more than one set of hydrogens on the structure above, write both letters in alphabetical order, e.g. ab) Signal number 2 corresponds to hydrogen(s)