Closed-form for $\int_0^\infty {\frac{{\ln \left( {1 + x} \right)}}{{1 + ax}}{e^{ - bx}}{x^n}{\rm{d}}x} $

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I am trying to find the integration of the following

$$\int_0^\infty {\frac{{\ln \left( {1 + x} \right)}}{{1 + ax}}{e^{ - bx}}{x^n}{\rm{d}}x} $$

Here $a>0, b>0$, and $n$ is an integer.

I think if we get the Meijer-G representation of

$$\frac{{\ln \left( {1 + x} \right)}}{{1 + ax}}$$

we can use Laplace transform to get the closed-form expression. But I don't know how to express the above function as Meijer-G function.

Thanks.