Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are uncertain, you must pick either a, b, c, or d without using any additional words.
Options:
a) COP(=O)(OC)Sc1ccc([N+](=O)[O-])cc1
b) CNC(=O)c1ccc(Cl)c(S(=O)(=O)NC)c1
c) CC(C)NNC(=O)COc1ccc(Cl)cc1
d) CCCCOCC(O)COc1ccccc1
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}