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, or c without using any additional words.
Options:
a: O=C(O)Cc1sc(-c2ccccc2)nc1-c1ccc(Cl)cc1
b: CC(=NOC(=O)N(C)SSN(C)C(=O)ON=C(C)SCCC#N)SCCC#N
c: c1ccc(N2CCOCC2)cc1
Answer: a
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}