Task: Please answer the multiple choice question.
Question: Which molecule has the highest LD50 in rats (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any additional words.
Options:
(a) NS(=O)(=O)c1cc(-c2nnn[nH]2)c(NCc2cccs2)cc1Cl
(b) NCCN1CCNCC1
(c) COc1cc(-c2ccc(N)c(OC)c2)ccc1N
(d) COc1ccc(-c2ccc(=O)n(CC(=O)N(C)C(C)Cc3ccccc3)n2)cc1
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}