Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any other words.
Options:
a) CCOP(=S)(OCC)Oc1ccc([N+](=O)[O-])cc1
b) CC(=O)c1cccc(N)c1
c) COP(=S)(OC)Oc1ccc([N+](=O)[O-])c(SC(C)C)c1
d) CN(C)C(=O)Nc1ccc(Cl)cc1
Answer: d
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}