The disclosure relates to a composition comprising (a) 30 &ndash 80% of at least one compound of formula 1, (b) 10 &ndash 40% of at least one compound of formula 2, wherein the R groups and variable bond orders are as defined in the specification, and (c) at least one compound selected from the group consisting of a sesquiterpene, a sesquiterpene alcohol, a sesquiterpene epoxide, p-cymene, an oxygenated cyclohexane, an oxygenated cyclohexene and a monoterpene, wherein the amount of any monoterpene in the fraction does not exceed 5% of the total composition.
