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, or c without using any other words.
Options:
a: CON(C)C(=O)Nc1ccc(Cl)cc1
b: Cc1ccc([N+](=O)[O-])cc1S(=O)(=O)Cl
c: S=c1[nH]nc(NCNc2n[nH]c(=S)s2)s1
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}