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(=O)Nc1cc(Cl)c([N+](=O)[O-])cc1Cl
b. CC(C)c1cccc(OC(=O)N(C)N=O)c1
c. Cc1ccccc1N=NN(C)C
d. O=c1[nH]c2cc(Cl)c(Cl)cc2o1
e. CC(C)Cc1ccc(C(C)C(=O)O)cc1
Answer: c
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}