In Fig. and throughout this paper, we use a custom nomenclature where saturated lactones are designated by NC,ring-NC,total-L, where NC,ring is the number of carbons in the ring and NC,total is the total number of carbons. This is a compact and comprehensible alternative to the common names for lactones, where NC,ring is designated by a Greek letter offset from one (α = 2, β = 3, γ = 4, etc.) and NC,total is designated by a series of non-standard prefixes (butyro = 4, valero = 5, capro = 6, etc.). For example, 4-5-L corresponds to γ-valerolactone. Table lists our abbreviations and the common names for all the lactones discussed in this paper.