Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any additional words.
Options:
a. CN1C(C(=O)Nc2nccs2)=C(O)c2ccccc2S1(=O)=O
b. CCNC(=O)C=Cc1cccc(Br)c1
c. CC(=O)Nc1cc(NS(=O)(=O)C(F)(F)F)c(C)cc1C
d. C=CC1CCC(C=C)OC1
e. CCOP(=O)(O)Sc1ccc(C)cc1
Answer: a
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}