Neither one of
WolframAlpha["Caffeine"]
WolframAlpha["Caffeine","FullOutput"]
returns a structure diagram for the molecule. It's consistent since StructureDiagram is not in the list of PodIDs, but a structure diagram is returned when querying caffeine on wolframalpha.com, and when calling:
ChemicalData["Caffeine"]
Also, page 394 of the book Hands-on Start to Wolfram Mathematica (2nd edition) shows a call to WolframAlpha["caffeine"] returning a structure diagram and a 3D structure.
Anyone know why the structure diagram is missing?
WolframAlpha["caffeine Structure diagram"]
gives it to you. $\endgroup$ – george2079 Feb 27 '18 at 19:40WolframAlpha["Caffeine","Image"]
returns the expected result (in an expect unusable format). $\endgroup$ – bobthechemist Feb 27 '18 at 20:13