Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any additional words.
Options:
a. Cc1cc(C(=O)c2ccccc2)ccc1N
b. Cc1cc([N+](=O)[O-])cc([N+](=O)[O-])c1
c. CCOP(=S)(CC)Sc1ccccc1
d. CCOC(C1=NCC(C)(CC)CN1)c1ccc(Cl)cc1
e. CCOP(=S)(Oc1cnn(C)c(=O)c1SCC)OC(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}