Delta-Wye Transformation of Capacitors
Allow me to draw it in a different way:



Now have another go at solving the problem.

A final hint: You will need to use the following two equations a total of 5 times (one equation is used twice, and the other three times).

$$\frac{1}{C_{series}} = \frac{1}{C_{1}} +\frac{1}{C_{2}} +...$$

$$C_{parallel} = C_1+C_2+...$$