Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any other words.
Options:
a.) CC1(C)Cc2cccc(OC(=O)NCSc3ccc(Br)cc3)c2O1
b.) OC1CCc2ccccc2C1
c.) N#CC(c1ccccc1)c1ccccc1
d.) CN1C(=O)CN2CCc3ccccc3C2c2cc(Cl)ccc21
Answer: a
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}