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) CCCN(CCCl)c1c([N+](=O)[O-])cc(C(F)(F)F)cc1[N+](=O)[O-]
(b) CN1C(C(=O)Nc2ccccn2)=C(OC(=O)C(C)(C)C)c2sc(Cl)cc2S1(=O)=O
(c) Nc1ccc([N+](=O)[O-])cc1
(d) CCc1cc(CC)cc(OC(=O)NC)c1
(e) O=[N+]([O-])c1ccccc1O
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}