Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are not sure, you must pick either a, b, c, d, or e without using any additional words.
Options:
a: CCCCOCCOCCCC
b: FC(F)(F)c1nc2c(Br)c(Br)c(Br)c(Br)c2[nH]1
c: OCCCCCCO
d: O=c1c(O)c(-c2ccc(O)c(O)c2)oc2cc(O)cc(O)c12
e: CCCCCOC(CBr)c1ccc(C2CCCC2)cc1
Answer: d
Task: Please answer the multiple choice question.
Question: Which molecule has the highest {acute_toxicity__names__noun}?
Constraint: Even if you are {#uncertain|not sure!}, you must pick either {%multiple_choice_enum%2-5%aA1} without using any {#other|additional!} words.
Options:
{SMILES%acute_toxicity%}
Answer: {%multiple_choice_result}