Task: Please answer the multiple choice question.
Question: Which molecule has the highest LD50 in rats (oral exposure)?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any additional words.
Options:
a: O=C1C2CC=CCC2C(=O)N1SC(Cl)(Cl)C(Cl)Cl
b: S=c1[nH]c2ccccc2[nH]1
c: Cc1cccc(N2CCN(CCC(O)c3ccc4c(c3)CCC(=O)N4)CC2)c1C
d: Cc1c(N)nc(C)c2c1[nH]c1ccccc12
Answer: c
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}