We also remapped sphingomyelins (SM), where the sphingosine (d18:1) tail now contains an additional bead, compared to the recent parameterization by Stroh et al., which results in improved phase transition properties. The mapping of polyunsaturated phospholipids was also revised, where the interaction level of the bead now depends on how many double bonds are contained within. Beads that span 1.5 double bonds have their interaction level increased to C5h to differentiate them from the normal double bond type C4h (Figure .