Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any additional words.
Options:
[a] O=C1C=CCC2C3CCCN4CCCC(CN12)C34
[b] CCC(CO)(CO)CO
[c] CC(C)(C)c1nnc(NS(=O)(=O)c2ccccc2)s1
[d] CCCCC(CC)COC(=O)OOC(=O)OCC(CC)CCCC
[e] CC(C(=O)O)c1ccc(N2CC3=C(CC=CC3)C2=O)cc1
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}