Last 25ish of a 500 runner comp.
New table and no info on any of the other players.
Table '203391986 22' 9-max Seat #5 is the button
Seat 2: GoeliO1 (113900 in chips)
Seat 3: Froonobulax (43620 in chips)
Seat 4: TheGatherer2 (29944 in chips)
Seat 5: sey_when (111907 in chips)
Seat 6: thegrinder44 (4685 in chips)
Seat 7: TheTench (38169 in chips)
Seat 8: gator509 (34100 in chips)
Seat 9: Sir Bollocks (23055 in chips)
thegrinder44: posts small blind 900
TheTench: posts big blind 1800
*** HOLE CARDS ***
Dealt to TheTench [

]
gator509: folds
Sir Bollocks: folds
GoeliO1: folds
Froonobulax: calls 1800
TheGatherer2: folds
sey_when: calls 1800
thegrinder44: calls 900
TheTench: checks
*** FLOP *** [

]
thegrinder44: checks
TheTench: checks
Froonobulax: bets 5400
sey_when: raises 18000 to 23400
thegrinder44: folds
TheTench: ?? ?? ??
So what's my best move?