A 3D periodic table?

Are molecules more than the sum of their parts? That depends on what you take as the parts. Given that strychnine contains the same atoms as proteins (C, H, N, O), there doesn’t seem to be much insight into molecular properties afforded by pulling such molecules into their component atoms. On the other hand, brucine – also found in the Strychnos nux-vomica tree and another nasty toxin – suggests that the alkaloid framework common to both molecules is generically bad news.