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, d, or e without using any additional words.
Options:
a.) O=c1[nH]c2ccc(Cl)cc2o1
b.) CC1(C)C(C=C2CCCC2)C1C(=O)OCc1coc(Cc2ccccc2)c1
c.) CC(C)c1cccc(OC(=O)N(C)C)c1
d.) COc1ccc(OC)c(C(O)C(C)NC(C)C)c1
e.) CCCCC(O)c1ccccc1
Answer: c
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}