Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are not sure, you must pick either a, b, c, d, or e without using any other words.
Options:
(a) O=C1CN(N=Cc2ccc([N+](=O)[O-])o2)C(=O)N1
(b) CNC(=O)Oc1ccccc1C1OCC(C)O1
(c) CCOP(=S)(OCC)SC(=CC(=O)OC)C(=O)OC
(d) CCOC(=O)N(C)N=O
(e) OCC#CCO
Answer: d
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}