Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are uncertain, you must pick either a, b, c, d, or e without using any additional words.
Options:
a: CN(C)CCCN1c2ccccc2C(C)(C)c2ccccc21
b: O=c1[nH]c2ccc(Br)cc2o1
c: Sc1ccccc1
d: COc1ccc(NC(=O)N(C)C)cc1Cl
e: CCOC(=O)CCN(Cc1ccccc1)SN(C)C(=O)ON=C(C)SC
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}