Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any other words.
Options:
a Cc1cc(O)ccc1S(C)(=O)=O
b CNC(=O)Oc1cc(C)cc(C)c1
c COP(=S)(OC)Oc1ccc([N+](=O)[O-])c(C)c1
d CNC(=O)ON=C1CCCC1(C)C#N
Answer: c
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}