How much energy is stored by C2?

[wondermoose]

Homework Statement

In the figure (link below), C₁ = 20 $\mu$F, C₂ = 24 $\mu$F, C₃ = 16 $\mu$F, C₄ = 20 $\mu$F, C₅ = 22 $\mu$F, and V = 20 V. How much energy is stored by C₂?

Here's the figure:

Homework Equations

Q = C$\Delta$V
U_cap = (1/2)C$\Delta$V²
C_eq = C₁ + C₂ + C₃ + ...

The Attempt at a Solution

This was a last problem on a test that I got destroyed on, and we're getting credit for corrections but I'm still clueless to where I start. Any help is appreciated!

 

[ehild]

Some capacitors are connected in parallel, others in series. Determine the resultant of the capacitors C1, C2, C3, C4.

ehild