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 additional words.
Options:
[a] CSC(C)=NOC(=O)N(C)SN(C(C)C)P1(=S)OCCCO1
[b] COCCCNc1nc(NCCCOC)nc(SC)n1
[c] O=C1CSC(=S)N1
[d] O=C(O)c1ccccc1Nc1c(Cl)cc(Cl)c2ccccc12
[e] O=C1CN=C(c2ccccn2)c2cc(Br)ccc2N1
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}