Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any other words.
Options:
[a] CC(O)Cn1cnc2c1c(=O)n(C)c(=O)n2C
[b] CCc1ccc(C)[n+]([O-])c1
[c] CC1CN(CCCCCCCCNC(=O)Oc2ccc3c(c2)C2(C)CCN(C)C2N3C)CC(C)O1
[d] O=C(O)C1CCc2cc(C3CCCCC3)ccc21
[e] CCNc1nc(NCC)nc(OC)n1
Answer: a
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}