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 COP(N)(=S)Oc1cc(Cl)c(Cl)cc1Cl
b CN(C)C(=O)Nc1ccc(Cl)c(Cl)c1
c CCN(CC)N=Nc1ccccc1
d COP(=O)(OC)Oc1ccc(SC)cc1
e O=C(CCCN1CCN2Cc3[nH]c4ccccc4c3CC2C1)c1ccc(F)cc1
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}