Task: Please answer the multiple choice question.
Question: Which molecule has the highest LD50 in rats (oral exposure)?
Constraint: Even if you are not sure, you must pick either a, b, c, d, or e without using any additional words.
Options:
(a) COP(=S)(OC)Oc1ccc([N+](=O)[O-])cc1
(b) CC(=Cc1ccccc1)CC(=O)N(CCO)CCO
(c) CCCCN(N=O)c1ccc(N(CCCC)N=O)cc1
(d) CCC(C(=O)c1ccc2[nH]c(=O)ccc2c1)N1CCN(c2cccc(Cl)c2)CC1
(e) Cc1c(O)cc([N+](=O)[O-])cc1[N+](=O)[O-]
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}