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 other words.
Options:
a) O=C1c2ccccc2C(=O)C1c1ccccc1
b) Oc1ccc(C2=CCCCC2)cc1
c) CCOP(=S)(OCC)SCCC(F)=C(F)F
d) Oc1ccc(O)c2[nH]c(C(F)(F)F)nc12
e) CC(CN=Cc1ccccc1O)N=Cc1ccccc1O
Answer: c
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}