Transposed spinors and charge conjugation

Hello,

I would like to study a process in which two fermions elastically scatter via an intermediate state (of fermion number 2) in the S-Channel.
The corresponding lagrangian includes terms like $\psi^T C \gamma^\5 \Phi \psi$ and the corresponding hermitian conjugates
where
\psi^T is a transposed spinor,
\Phi is a scalar
and
C is the matrix of charge conjugation.

The question is: Can I use MadGraph to calculate such a process (lagrangian) using transposed spinors? and if yes, how do I proceed?

Cheers,
Khaled