Task: Please answer the multiple choice question.
Question: Rank these molecules from lowest to highest LD50 in rats (oral exposure).
Constraint: You must select all options from a, b, c, or d without using any other words.
Options:
[a] O=C1CCCCCS1
[b] COC(=O)C(C)=COP(=S)(OC)OC
[c] FC(F)(F)c1nc2c(Cl)cccc2[nH]1
[d] O=C(CCCCC(=O)OCC1CCC2OC2C1)OCC1CCC2OC2C1
Answer: d
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}