Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any other words.
Options:
[a] O=C(Cc1ccc(-c2ccccc2)cc1)OCCF
[b] Clc1cccc(C(Cl)(Cl)Cl)n1
[c] CN(N=O)C(=O)C(=O)N(C)N=O
[d] COP(=O)(NC(C)=O)SC
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}