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] C=CN(C(C)=O)c1ccccc1
[b] CCCCCCOC(=O)C(O)c1ccccc1
[c] CSc1ccc2c(c1)N(CCC1CCCCN1C)c1ccccc1S2
[d] CN(N=O)c1ccc(C=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}