Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are not sure, you must pick either a, b, c, d, or e without using any other words.
Options:
a.) O=C1CCc2cc(CCCN3CCN(c4ccccc4)CC3)ccc2N1
b.) O=[N+]([O-])c1cc[n+]([O-])cc1
c.) Nc1c(Cl)cc(C(=O)NC2CC2)cc1Cl
d.) Cc1cn(C2C=CC(CO)O2)c(=O)[nH]c1=O
e.) CC1(C2CCC3(C)OC3C2)CO1
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}