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, d, or e without using any additional words.
Options:
a: Cc1cccc([N+](=O)[O-])c1
b: CCC(C)c1cc(OC(=O)NC)ccc1C
c: O=P(O)(O)OC(=CCl)c1ccc(Cl)cc1Cl
d: CNC(=O)Oc1cc(C(C)C)c(OC(=O)NC)cc1C
e: CCCSP(=S)(OCC)Oc1cnn(C)c(=O)c1OC
Answer: a
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}