Does an explicit solution for $\omega$ exist in this equation?

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Consider the equation (such that all variables are positive real numbers)

$$S=S_0e^{t\left(\mu-\frac{1}{\omega}\right)-\frac{t\sigma^2}{2}}-\frac{2\Lambda\left(1- e^{\frac{2t\left(\mu-\frac{1}{\omega}\right)-t\sigma^2}{2}}\right)}{\omega\left(2\left(\mu-\frac{1}{\omega}\right)-\sigma^2\right)}.$$

Is there an explicit solution for $\omega$ (possibly in Lambert form)? Otherwise, could a suitable approximation be made (since Newton's method seems tedious in this case)? Any help would be much appreciated. For context/derivation see Determining Properties of Stochastic Differential Equation ...

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As stated in the comments, an approximation of the form

$$\omega=K\tanh^{-1}\left(\frac{\left(\Lambda-S\right)e^{\frac{t\sigma^{2}}{2}}}{\Lambda\ e^{\frac{t\sigma^{2}}{2}}-S_{0}e^{t\mu}}\right)$$

seems sufficient.