UTG is a total fish as you can see from his river fold. He's thrown out random over bets in the 10 hands I've sat for. No reads on UTG, so I folded.

Poker Room skin
No Limit Holdem Ring game
Blinds: $0.50/$1
5 players


Stack sizes:
UTG: $145.80
Hero: $82.00
Button: $134.45
SB: $145.90
BB: $40.55

Pre-flop: (5 players) Hero is CO with
UTG calls, Hero calls, Button calls, SB calls, BB checks.

Flop: ($5, 5 players)
SB checks, BB checks, UTG bets $20, Hero calls, Button raises to $50, 2 folds, UTG calls, Hero folds.

Turn: ($125, 2 players)
UTG checks, Button bets $66, UTG calls.

River: ($257, 2 players)
UTG checks, Button is all-in $17.45, UTG folds.
Uncalled bets: $17.45 returned to Button.

Results:
Final pot: $257