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, d, or e without using any additional words.
Options:
a: NC(=S)Nc1ccc(-c2ccc(NC(N)=S)cc2)cc1
b: CCOP(=S)(OCC)Oc1cnc2ccccc2n1
c: CCCN=C(C(OCC)c1ccccc1)N1CCCCCC1
d: CCN(CC)c1cc(C)nc2ncnn12
e: O=C(O)COCC(=O)O
Answer: b
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}