Task: Please answer the multiple choice question.
Question: Which molecule has the highest LD50 in rats (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 CCOc1ccc2ccccc2c1
b O=C(Cc1ccccc1)OC1=C(OC(=O)Cc2ccccc2)C(=O)OC1=O
c CC(=O)c1c(Cl)c(Cl)c(Cl)c(Cl)c1Cl
d CCNC(C)c1ccccc1
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}