is the analytic form. It might involve the symbolic sum over the roots of an expression, perhaps using a RootOf() object. If the polynomial in the RootOf() is degree higher than 4 then you are unlikely to be able to get an analytical solution. If it is degree 2, 3, or 4 then you can in theory extract the analytical solutions, but for anything higher than degree 2 they might be terribly long.
Unfortunately at the moment I do not know how to use MuPAD to request all of the roots of a RootOf() object which is a polynomial of degree 2, 3, o4 4. Possibly indexing the RootOf() might do it. In Maple I would use the allvalues() operation, which is not defined for MuPAD. I cannot test this as I do not have MuPAD.
The analytic transform for the expression you give, with the roots all expanded, runs to pages and pages. I have my system trying to simplify() it, but my expectation is that I will run out of memory.