Sentence:  The configurations around the double bond in the side chain are based on considerations of the Raman spectra, dielectric constants, etc., and on comparatively small differences in reactivity; for example, "neo-α"-irone is converted into <WSD>irene</WSD> less readily than α-irone, but forms an oxime more rapidly; [...] 
Meaning of the word marked with <WSD> tags:  The hydrocarbon formed by dehydration of an irone.