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, or c without using any other words.
Options:
a. O=S1(=O)CCN(c2ccccc2)CC1
b. O=C(O)C(c1ccccc1)c1ccccc1
c. O=c1n(CC2CO2)c(=O)n(CC2CO2)n1CC1CO1
Answer: a
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}