Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (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) CCCCCCCCOC(CBr)c1ccc(C2CCCCC2)cc1
(b) OC(c1ccccc1)(c1cncnc1)c1ccc(Cl)cc1Cl
(c) CCCC=C1OC(=O)c2ccccc21
(d) O=C(OCC1CO1)c1ccccc1
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}