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) CCCCC1C(=O)NC(=O)N(C2CCCCC2)C1=O
(b) CCSCCCl
(c) ClCCCl
(d) CP(=O)(Oc1ccc([N+](=O)[O-])cc1)c1ccccc1
(e) N#CC1CC=CCC1
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}