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 additional words.
Options:
[a] CCOP(=S)(CC)Sc1ccc(C(C)(C)C)cc1
[b] NC(=O)c1ccc([N+](=O)[O-])cc1
[c] CNC(C)C(O)c1ccccc1
[d] O=[N+]([O-])c1ccc2ccccc2c1
[e] CS(=O)(=O)c1ccccc1
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}