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) COP(=S)(OC)SCC(=O)O
b) CCCCCCCCCCCCN1CCN(CC(=O)NN=Cc2ccc([N+](=O)[O-])o2)CC1
c) Fc1c(Br)c(F)c2nc(C(F)(F)F)[nH]c2c1Br
d) Cc1n[nH]cc1Cl
e) FC(F)(F)c1nc2c(Br)c(Cl)c(Br)c(Cl)c2[nH]1
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}