Task: Please answer the multiple choice question.
Question: Rank these molecules from lowest to highest acute oral toxicity rat LD50.
Constraint: You must select all options from a, b, c, or d without using any other words.
Options:
[a] N#CCCC[Si](Cl)(Cl)Cl
[b] CCC(C)(C)NC(N)=NC#N
[c] ClC(Cl)(Cl)CC1CO1
[d] CCCCCC=CCC=CCCCCCCCC(=O)N(CCO)CCO
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}