Turning Stone 550 ESPC, Bad Spot with Huge Draw

[driverseati]

50-75 level, effective stacks 4800 to start...

utg limps, utg+1 limps, I limp with A4cc on the button, bb (Ansky) checks.

utg two hands prior just doubled me up with J9 vs my AK getting it all in preflop. He is obviously bothered in some manner from that hand. The limp from him is an instalimp.

utg+1 is about a 60 year old man, has played 0 hands prior to this hand. No other reads other than that.

BB is Ansky, enough said.

Hand: Ac4c

Flop: Ad 2c 3c

All 3 check, I bet 225, Ansky asks how much I have behind, I say 4500. He then makes it 850, utg folds, and now utg+1 makes it 1850. (Pot now 3225)

What is the best play here?

Edited to add pot size.