[O] latex formula error when nested into a list?

[Luca Ferrari]

Hi all,
don't know if this is a normal behavior, but using a latex formula like this:

\begin{equation}
\begin{align}
a \times b &= c \times d \\& = f
\end{align}
\end{equation}

into an org list, that is:

- \begin{equation}
\begin{align}
a \times b &= c \times d \\& = f
\end{align}
\end{equation}

produces the following latex error:

! Package amsmath Error: Erroneous nesting of equation structures;
(amsmath)                trying to recover with `aligned'.

while removing the list bullet makes it working. Am I doing something
wrong? Is it possible to nest formulas into lists?

Luca