How can I find `h(r)`

from this equation?

I need `h(r)`

or its `r`

derivative.

```
(E^(Derivative(1)(h)(r)^2/(2*b^2))*Sqrt(r^4*Sin((Theta)())^2)*
(-(r*Derivative(1)(h)(r)^2*Derivative(2)(h)(r)) -
b^2*(2*Derivative(1)(h)(r) + r*Derivative(2)(h)(r))))/
(4*b^2*Pi*r) == 0
```

In fact, the output of `Mma`

is kind of vague. Is there anything wrong?