Optical activity of (1r,3R,5S)-1-methyl-3,5-dipropylcyclohexane (or other long alkyl groups)

Consider a cyclohexane with a methyl group at C1 position and a propyl group at C3 and C5 position and each of the first bond bonded to the cyclohexane in alkyl groups has wedge bond. I do not think this can be called a meso compound as the second and third bond of the propyls rotate freely and thus there is no plane of symmetry and it is chiral. Despite of that, some sources tend to regard those two propyls as a single unit that is called as *Pr* and hence the compound is meso. Giving those second and third bond of the propyls with mixed wedge-wedge, wedge-dash, dash-wedge, and dash-dash also give same chemical name as (1r,3R,5S)-1-methyl-3,5-dipropylcyclohexane.


I am wondering if those variants will be chiral or not. Whether those variants are chiral or not, I am also interested in how much is the optical activity of each variant.


