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: CC=C1CC(C)C(O)(CO)C(=O)OCC2=CC[N+]3([O-])CCC(OC1=O)C23
b: CCc1oc2ccccc2c1C(=O)c1cc(Br)c(O)c(Br)c1
c: CCNc1nc(NC(C)CC)nc(OC)n1
d: O=C(CCCCC(=O)OC1CCCCC1)OC1CCCCC1
e: Cc1cc(-n2c(C)nc3ccccc3c2=O)cc(C)c1O
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}