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 CC(C)NCC1CCc2cc(CO)c([N+](=O)[O-])cc2N1
b C=C(C)C(=O)NCO
c O=[N+]([O-])C(F)(COCC(COCC(F)([N+](=O)[O-])[N+](=O)[O-])(N(F)F)N(F)F)[N+](=O)[O-]
d CN1CCCC1c1cccnc1
e C=COC(=O)C=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}