Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are not sure, you must pick either a, b, c, d, or e without using any additional words.
Options:
a CC(C(=O)O)c1ccc(-n2cc3ccccc3n2)cc1
b CC(C(=O)Nc1cc(-c2ccccc2)nn1-c1ccccc1)N(C)C
c O=C1C(=O)c2ncccc2-c2cccnc21
d CCCN(CCC)c1c([N+](=O)[O-])cc(C(F)(F)F)c(N)c1[N+](=O)[O-]
e CC(C=O)Cc1ccc(C(C)(C)C)cc1
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}