Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are not sure, you must pick either a, b, c, d, or e without using any additional words.
Options:
a CCP(=S)(OC)Sc1ccc(C)cc1
b CCOP(=S)(CC)Oc1cc(Cl)c(Br)cc1Cl
c CCC(=O)OCc1ccccc1
d N#CN=C1SCCN1Cc1ccc(Cl)nc1
e CCOP(=S)(OCC)Oc1ccc([N+](=O)[O-])c(C)c1
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}