You should get a 49cm as the bike has sloping frame. On a normal frame the 53cm would be perfect.
I wrote this already before when you asked about the frame size.
Kind regards,
Jo
Compact Frame
Traditional "road" frames have been built with level top tubes since the early 1900s. The influence of mountain and BMX bike design has led to the increasing popularity of frames with sloping top tubes, higher at the front.
"Compact" road frames have sloping top tubes, and are intended to be used with a long seatpost. Compact frames are a little bit lighter than traditional ones, but this is partially offset by the weight of the longer seatppost. Some riders believe they are stiffer.
Manufacturers like them because they are more versatile in terms of fit. Usually 3 or 4 sizes are enough to fit 98% of customers. This saves a lot of money for a manufacturer who doesn't need to deal with so many SKUs.
Sheldon Brown's Bicycle Glossary Cn--Cz