Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any additional words.
Options:
a.) CCCn1cnc2c1c(=O)n(CCCCC(C)=O)c(=O)n2C
b.) O=CN(c1ncnc2c1ncn2C1CC1)C1CC1
c.) O=C=Nc1ccc(Cc2ccc(N=C=O)cc2)cc1
d.) COc1cccc(C2(O)CCCCC2CN(C)C)c1
e.) Cc1cncc(C)n1
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}