Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are not sure, you must pick either a, b, c, d, or e without using any other words.
Options:
[a] CCCCOCCOCCOCc1cc2c(cc1CCC)OCO2
[b] CC(O)C(=O)O
[c] CCS
[d] FC(F)(F)c1nc2c(Cl)c(Cl)c(Cl)cc2[nH]1
[e] CCOP(=S)(OCC)SCSC(C)C
Answer: a
Task: Please answer the multiple choice question.
Question: Which molecule has the highest {acute_toxicity__names__noun}?
Constraint: Even if you are {#uncertain|not sure!}, you must pick either {%multiple_choice_enum%2-5%aA1} without using any {#other|additional!} words.
Options:
{SMILES%acute_toxicity%}
Answer: {%multiple_choice_result}