Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any other words.
Options:
[a] CSc1nc(N=[N+]=[N-])nc(NC(C)C)n1
[b] COc1ccc2c3c1OC1C(O)C=CC4C(C2)N(C)CCC341
[c] CC12CC=CCC1C(=O)OC2=O
[d] O=C(COc1ccc(Cc2ccc(Cl)cc2)cc1)OCc1cccnc1
[e] Cc1nc2n(c(=O)c1CCN1CCC(c3noc4cc(F)ccc34)CC1)CCCC2O
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}