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] CCSC(=S)N(CC)CC
[b] COP(=S)(OC)Oc1ccc(S(=O)(=O)c2ccc(OP(=S)(OC)OC)cc2)cc1
[c] COC(=O)Nc1nc2ccc(C(=O)c3ccc(F)cc3)cc2[nH]1
[d] CC(OCCCl)OCCCl
[e] CSCCC(O)C#N
Answer: b
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}