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, or d without using any other words.
Options:
a. CCC(CC)C(=O)O
b. O=C1CCc2cc(CCCCN3CCN(c4ccccc4Cl)CC3)ccc2N1
c. CCCCC(CC)COP(Oc1ccccc1)Oc1ccccc1
d. CC(C)OC(=O)Cl
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}