Horrible board, massive pot

Table is full of standard 30 – 40vpip type players, no one unusually aggressive or anything.

Hero is MP with Jc Jd.
UTG limps, EP limps, Hero Raises, MP+1 cc’s, MP+2 reraises, BB calls, all call (18 SB’s)
Flop: 6c 7d 8d. UTG checks, EP bets, hero raises, ALL CC! (36SB’s)

Turn: 2c. checked to hero who bets, 4 callers (23BB’s)

River: 4h (Yuk!) EP Bets, hero… (looks very nervously at the 2 people still to play)

edit: actually I don't know why I'm asking what to do cos it's pretty bleeding obvious that hero has to call here.

Hero calls, MP+ 1 raises (sigh), 2 folds, EP calls, hero... calls and hates himself?