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) CN(N=O)C(N)=O
(b) O=c1[nH]cc(N(CCCl)CCCl)c(=O)[nH]1
(c) CO[Si](CCCNCCN)(OC)OC
(d) CC(=O)SCC(=O)Nc1nc2ccccc2s1
(e) Cc1ccc(C2=CCN(CC=Cc3ccc4c(c3)CCC(=O)N4)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}