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 additional words.
Options:
a. CCCOP(=S)(OCC(C)C)Oc1cnn(C)c(=O)c1OC
b. O=[N+]([O-])c1ccc(O)c(Cl)c1
c. CCN(CCNS(C)(=O)=O)c1ccc(N)c(C)c1
d. CCNCC(O)c1cccc(O)c1
e. O=C(Cl)c1ccc(C(=O)Cl)cc1
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}