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 additional words.
Options:
a) O=C(C=Cc1ccccc1)OCC=Cc1ccccc1
b) O=c1nc2[nH]c(=O)[nH]cc-2[nH]1
c) Cc1ccccc1-n1c(C)nc2ccccc2c1=O
d) O=C(Cc1ccccc1)OCCc1ccccc1
Answer: d
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}