Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any other words.
Options:
a CN1CCC(CN2c3ccccc3Sc3ccccc32)C1
b O=C(CCCCC(=O)OC1CCCCC1)OC1CCCCC1
c COP(=S)(N=C1SCCS1)OC
d Cc1nccnc1C
e CS(=O)(=O)c1ccc(-c2cn3ccccc3n2)cc1
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}