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.) O=[N+]([O-])OCCOCCO[N+](=O)[O-]
b.) Brc1c[nH]cn1
c.) CCN1C(=O)c2ccccc2C1Nc1ccc(OCCN2CCCCC2)cc1
d.) CCl
e.) CCOP(=O)(OCC)SCCS(=O)(=O)CC
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}