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) O=C(C=Cc1ccccc1)OCC=Cc1ccccc1
(b) Cc1cc(NS(=O)(=O)c2ccc(N)cc2)no1
(c) CCN1CC2CN(C)CC(C1)C2OC(=O)c1ccc(Cl)cc1
(d) COCCCNc1nc(NC(C)C)nc(SC)n1
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}