Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are not sure, you must pick either a, b, c, d, or e without using any additional words.
Options:
a: O=C(CCl)OC1=C(OC(=O)CCl)C(=O)OC1=O
b: Fc1c(Br)c(Cl)c2nc(C(F)(F)F)[nH]c2c1Br
c: COc1cc2c(cc1OC)C(CCc1ccc(Cl)cc1)N(C)CC2
d: NC(=O)Nc1cccc2c3c([nH]c12)CCCC3
e: CCOP(N)(=O)SC
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}