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, or d without using any other words.
Options:
(a) CCCCC(CC)COC(CBr)c1ccc(C2CCCCC2)cc1
(b) CNC(=O)ON=C1SCCS1
(c) O=C(COc1ccc(Cc2ccc(Cl)cc2)cc1)OCc1cccnc1
(d) CNc1nc(C)nc(OC)n1
Answer: c
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}