Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any other words.
Options:
a CC(C)(SC(=O)N1CCCCC1)c1ccccc1
b CNC(=O)Oc1ccccc1C1SCCS1
c CCn1nc(C(=O)O)c(=O)c2cc3c(cc21)OCO3
d NC(=[NH2+])NCCCC(N)C(=O)[O-]
e O=C(O)C1C(=CCO)OC2CC(=O)N21
Answer: b
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}