Task: Please answer the multiple choice question.
Question: Which molecule has the highest LD50 in rats (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any other words.
Options:
a) CCC(C)CC(CC)Nc1ccc(NC(CC)CC(C)CC)cc1
b) CCN(CCC(=O)OC)c1ccccc1
c) CCCCCCCC(=O)Oc1c(Br)cc(C#N)cc1Br
d) CC(C)(N=C=O)c1cccc(C(C)(C)N=C=O)c1
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}