Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are not sure, you must pick either a, b, c, d, or e without using any other words.
Options:
[a] CN(N=O)c1ccc(N=O)cc1
[b] COc1c(Cl)ccc(Cl)c1C(=O)O
[c] CCCC(=O)N(CSP(=S)(OC)OC)c1ccccc1Cl
[d] O=C(O)c1cc(Cl)cc([N+](=O)[O-])c1Cl
[e] CCCSP(=O)(OCC)Oc1c(Cl)cc(Cl)cc1Cl
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}