Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any other words.
Options:
a: CN1C(=O)CCS(=O)(=O)C1c1ccc(Cl)cc1
b: CCCC(=O)OC1=C(OC(=O)CCC)C(=O)OC1=O
c: FC(F)(F)c1nc2cc(Cl)ccc2[nH]1
d: CCCC(=O)OC(=O)CCC
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}