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 other words.
Options:
a. CC(c1ccccc1)N(C)N=O
b. COP(=S)(OC)Oc1ccc(S(C)(=O)=O)c(C)c1
c. CCOP(=S)(CC)Oc1ccc([N+](=O)[O-])c(C)c1
d. CC(=O)c1ccccc1
e. CCC(=O)OCc1ccc(OC)cc1
Answer: d
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}