Estimate the flash point of O=C1c2cccc3ccc4ccc5cccc1c5c4c23.
The flash point is 503.750 K.
{#Task: |Task: |!}{#Predict|Estimate!} the {flashpoint__names__noun} of {SMILES#}.
{#Answer: |A: |!}The {flashpoint__names__noun} is {flashpoint#} {flashpoint__units}.