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) CN1CCC(n2[nH]c(-c3ccccc3)c(Cc3ccccc3)c2=O)CC1
(b) COCCOCCO
(c) CS(=O)(=O)c1nc(-c2ccc(F)cc2)n(-c2ccc(Cl)cc2)n1
(d) O=C1C=CC(=O)N1c1cccc(N2C(=O)C=CC2=O)c1
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}