Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are not sure, you must pick either a, b, c, d, or e without using any other words.
Options:
[a] CCc1c(C)[nH]c2c1C(=O)C(CN1CCC3(CC1)OCCO3)CC2
[b] C#CCOC(=O)CCCCC(=O)OCC#C
[c] CNC(=O)ON=C(C)SCC(=O)N1CCCC1
[d] Cc1ccc(C2=CCN(CC=Cc3ccc4c(c3)CCC(=O)N4)CC2)cc1
[e] C[N+](=O)[O-]
Answer: e
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}