  We are interested in the study of the space of $n$-ary differential operators
denoted by $\mathfrak{D}_{\underline{\l},\mu}$ where
$\underline{\l}=(\l_{1},...,\l_{n})$ acting on weighted densities from $\frak
F_{\l_1}\otimes\frak F_{\l_2}\otimes...\otimes\frak F_{\l_n}$ to $\frak
F_{\mu}$ as a module over the orthosymplectic superalgebra
$\mathfrak{osp}(1|2)$. As a consequence, we prove the existence and the
uniqueness of a canonical conformally equivariant symbol map from
$\mathfrak{D}_{\underline{\lambda},\mu}^k$ to the corresponding space of
symbols as well for the explicit expression of the associated quantization map.
