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, or d without using any other words.
Options:
a O=[N+]([O-])c1ccc(C=NNC(=S)N2CCCCC2)o1
b COCC(C)O
c Cc1c(Cl)cc(-c2ccc(=O)[nH]n2)cc1Cl
d CCC=CC1C(C(=O)OCc2coc(Cc3ccccc3)c2)C1(C)C
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}