[halpgr]

Your preflop raise was too low for the number of limpers. This showed weakness to the others who then attacked by coming over the top. I think a larger pf raise would have discouraged them from possibly making a play on you to chase you out and isolate CO which would leave you with an easier decision here.

If you had raised more preflop then everyone would know you're willing to take on tilting CO and they would likely only push truly premium hands. Still in this case while btn may be trying to isolate CO, SBs move is very strong. Still you're getting great pots odds so I'd lean toward a call.