The general form of isomorphisms commuting with differentiation in spaces of entire functions of slow growth

The general form is found for an isomorphism $I$ in a space of entire functions of several complex variables of sufficiently slow growth, when $I$ is required to commute with every operator $D^p=\partial^{p_1+\dots+p_n}/\partial z^{p_1}_1\cdots\partial z^{p_n}_n$.
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