Task: Please answer the multiple choice question.
Question: Rank these molecules from lowest to highest acute oral toxicity (LD50 in rats).
Constraint: You must select all options from a, b, c, d, or e without using any additional words.
Options:
a. O=P(O)(O)Oc1ccccc1
b. CN(CCc1ccccc1)N=O
c. C=C(Cl)c1ccc([N+](=O)[O-])cc1
d. CCc1ccc(C)cc1
e. CCOP(=S)(CC)Oc1cc(Cl)ccc1Cl
Answer: b
Task: Please answer the multiple choice question.
Question: Rank these molecules from lowest to highest {acute_toxicity__names__noun}.
Constraint: You must select all options from {%multiple_choice_enum%2-5%aA1} without using any {#other|additional!} words.
Options:
{SMILES%acute_toxicity%}
Answer: {%multiple_choice_result}