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] CC1(C)OC(=O)N(c2cc(Cl)cc(Cl)c2)C1=O
[b] N#CSCSC#N
[c] CCN1CCNCC1
[d] CCCCN(CC)C(=O)SCCC
[e] COP(=S)(OC)Oc1ccc(SSc2ccc(OP(=S)(OC)OC)cc2)cc1
Answer: d
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}