Fig. 3. Graphical representation of planes A, C corresponding to cyclohexenones rings and plane B corresponding to the pyranic cycle. (Plane A: calculated through C2–C3–C4–C6–C7, plane B: calculated through C2–C7–O1–C8–C13, and plane C: calculated through C8–C9–C11–C12–C13). Obtain permission and include the acknowledgement required by the copyright holder if a figure is being reproduced from another source.