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) O=C1CCc2cc(C=CCCN3CCN(c4ccccc4)CC3)ccc2N1
(b) CCCCCCCCCCCCCCCCCC1=NC(C)(C)CC(C)N1
(c) Cn1nc(-c2ccccc2)c2conc2c1=O
(d) COP(=S)(OC)SCn1ncccc1=O
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}