3pairs + blockers on monotone board, bomb pot

20PLO - clubgg - 7 handed - 35 min vpip

Hero (SB): 99 BB
BB: 100 BB (VPIP: 50.00, PFR: 5.56, 3Bet Preflop: 0.00, Hands: 22)
UTG: 42 BB (VPIP: 57.14, PFR: 14.29, 3Bet Preflop: 0.00, Hands: 9)
MP: 311.7 BB (VPIP: 68.42, PFR: 5.26, 3Bet Preflop: 0.00, Hands: 24)
CO: 99.6 BB (VPIP: 18.75, PFR: 6.25, 3Bet Preflop: 0.00, Hands: 20)
BTN: 46.6 BB (VPIP: 50.00, PFR: 12.50, 3Bet Preflop: 0.00, Hands: 10)

6 players post ante of 3.5 BB, Hero posts SB 0.5 BB, BB posts BB 1 BB

Pre Flop: (pot: 24 BB) Hero has 5♣ 4♦ 3♥ 2♣

Flop: (24 BB, 2 players) 5♥ 4♥ 2♥

Hero checks, BB checks, UTG checks, MP bets 7.9 BB, fold, fold
Hero??? raise? call? fold?