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 additional words.
Options:
a. NC(=O)OC(CCl)Cc1ccccc1
b. O=C(O)CC(NC(=O)COc1ccc(Cl)cc1Cl)C(=O)O
c. O=[N+]([O-])c1ccc(CCl)cc1
d. CCOP(=O)(OCC)OC(=CCl)c1cc(Cl)ccc1Cl
e. CN(C)C(=O)SCCCCOc1ccccc1
Answer: e
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}