Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are not sure, you must pick either a, b, c, d, or e without using any additional words.
Options:
a. CNC(=O)ON=C(CSC)C(C)(C)C
b. CC(C)CC(C)Nc1ccc(Nc2ccccc2)cc1
c. CCOC(=O)C1(c2ccccc2)CCN(CCOCc2ccccc2)CC1
d. O=NN1CCCCCCC1
e. CC(C)=O
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}