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 additional words.
Options:
a.) O=C1CC2CC(O1)C1CCCC21
b.) CCP(=S)(OC)SCn1c(=O)oc2cc(Cl)cnc21
c.) COc1cc(C(=O)N2CCCCCCC2)cc(OC)c1OC
d.) CCCCC(CC)COC(CBr)c1ccc(C2CCCCC2)cc1
e.) Cc1cc(C)n(CCO)c(=O)n1
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}