Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any additional words.
Options:
a.) C#CCN1CCC2=C(C1)c1c(O)cc(C(C)C(C)CCCCC)cc1OC2(C)C
b.) O=C=NC1CCC(CC2CCC(N=C=O)CC2)CC1
c.) CCCCCCCCCCCCCCCCCC1=NCCN1
d.) C1CCCC1
Answer: d
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}