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 other words.
Options:
[a] CCC(Br)(CC)C(=O)NC(N)=O
[b] O=[N+]([O-])OCC(CO[N+](=O)[O-])O[N+](=O)[O-]
[c] C=CC(=O)OCCc1ccc(CC)cn1
[d] CCC1(C)OCCO1
[e] CC=C(C)C=CC=C(C)C
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}