But as I also explained in my interview with levo League, I work extremely hard.
They're called d- and l-isomers—d for dextro, l for levo; right and left, you see.
word-forming element meaning "toward the left," from French lévo-, from Latin laevus "left" (see left (adj.)).
levo- or lev-pref.
To the left: levorotation.