Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any additional words.
Options:
a) CC1CCC(N)CC1N
b) OCC(O)CN1CCN(c2ccccc2)CC1
c) CCSC(SCC)=C(C#N)C#N
d) CCCCC(C)(C)C(O)C=CC1C(C)CC(=O)C1CC=CCCCC(=O)O
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}