Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are not sure, you must pick either a, b, c, d, or e without using any other words.
Options:
a: CCOP(=S)(OCC)SCSC(C)C
b: CCCCN(C)CCCC
c: N#CSCCSC#N
d: CC12NC(=[NH2+])NC13N(CCC3(O)O)C(=[NH2+])NC2COC(N)=O
e: Cc1ncc2n1-c1ccc(Cl)cc1C(c1ccccc1F)=NC2
Answer: e
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}