The NMR Mosaic can help you interpret spectra with complex multiplets.

Complex multiplets are very difficult to interpret because it can be impossible to determine how many next-door hydrogens there are. With the NMR Mosaic you don’t have to worry about it!  The neighbor pieces will show you the correct piece. 

Here is an example spectrum and the Mosaic pieces you should put together for each peak. For the complex multiplet CH2, don’t add any static cling pieces yet.

Now put these pieces together as best you can: 

From the neighbors it is obvious that the multiplet CH2 is connected to a CH3 and CH, forming 2-chlorobutane.