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, or d without using any other words.
Options:
a) CCC(C)(C)c1cc(O)c(C(C)(C)CC)cc1O
b) O=C(CO)Nc1ccccc1
c) COC(C=Cc1ccccc1)OC
d) O=C(Nc1nc2ccc([N+](=O)[O-])cc2s1)c1ccc([N+](=O)[O-])cc1
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}