Furthermore, the proton signal due to the benzylic H-11
on the geranyl part showed cross-peaks with the C-6 (C$c
149.9), C-7 (~c 125.2) and C-8 (¢5c 132.9) signals, amongst
which the C-7 and C-8 shared HMBC correlations with
the H-21, thereby confirming the geranyl group at the
C-7 position.