Its really amazing, how many organic molecules are some variation of carbons in a line with oxygens stuck somewhere to change the geometry and then filled out with hydrogen's on the outside, and how often the carbons come in a multiple of 6. Its like maybe it's all the same thing and all of biology is just tricks to snip it here, add it there, and run the machinery by fitting the shapes into slots. We call it glucose or galactise, or a disaccharide, or ascorbic acid, or... Endless. But all the same basic punchcard, just different lengths.