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 other words.
Options:
a: CN1C(=O)CN=C(c2ccccc2)c2cc([N+](=O)[O-])ccc21
b: C=C(C)C=O
c: CC(C)(C)c1cc([N+](=O)[O-])cc([N+](=O)[O-])c1Nc1ccc([N+](=O)[O-])cc1[N+](=O)[O-]
d: COc1ccc2c(=O)c(C)c(-c3ccccc3)oc2c1CN(C)C
e: O=C(O)C=CC(=O)OCCOCCO
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}