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) CC(C)(C)c1cc(C(=O)c2cccs2)cc(C(C)(C)C)c1O
b) COc1ccc(C(=O)NCc2cccnc2)cc1C(=O)NCc1cccnc1
c) O=C(OC1CCC(N2CCCCC2)CC1)c1ccc([N+](=O)[O-])cc1
d) O=NN1CCN(N=O)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}