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: CCCCC(CC)C(=O)O[Si](C)(OC(=O)C(CC)CCCC)OC(=O)C(CC)CCCC
b: Cc1ncsc1C
c: CN(CCCN)CCCN
d: COc1ccc(OC)c(Cc2cnc3nc(N)nc(N)c3c2C)c1
e: O=[N+]([O-])OCC1CO1
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}