Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any other words.
Options:
(a) NC(=O)Cc1cccc2ccccc12
(b) CCCCCCc1ccc(C(CBr)OCC(CC)CCCC)cc1
(c) COc1ccc(O)c(C(C)(C)C)c1C(O)c1ncc([N+](=O)[O-])n1C
(d) CCOP(=S)(OCC)Sc1ccc(C)cc1
(e) Cc1ccccc1S(N)(=O)=O
Answer: e
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}