The chemical diagram depicts the nucleotide cytosine, or "C" in the DNA alphabet. But what does "C" have to do with the violin? Or is that a cello... ?
umm. DNA is transcripted to RNA by swapping all Cs with Gs, maybe we should swap all C notes in the musical score (and maybe also vice versa). I still have no idea, though.
http://en.wikipedia.org/wiki/Cytosine.
String instruments and chemotherapy agents? Hmmm. I have no idea if this is deliberate or not. DL labs, perhaps you could confirm this was intended?