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 additional words.
Options:
a. Cc1cc(C)c(C)cc1C
b. CC(=O)Nc1ccc(C(=O)CCl)cc1
c. COc1cc(C)nc(-n2nc(C)cc2OC)n1
d. NS(=O)(=O)c1ccc(Cl)c(S(N)(=O)=O)c1
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}