In the circuit shown (figure), the equivalent capacitance between the points X and Y is

Circuit is redrawn as shown in figure.

In the circuit, capacitors $4 \mathrm{\mu F}$ and $4 \mathrm{\mu F}$ are connected in series. Combination of this is in parallel with $1 \mathrm{\mu F}$ and $2 \mathrm{\mu F}$ capacitors.