Task: Please answer the multiple choice question.
Question: Which molecule has the highest rat LD50 (oral exposure)?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any other words.
Options:
a: CCN1CCCC(Nc2cc(C)nc(NC(=N)Nc3ccc(Cl)c(Cl)c3)n2)C1
b: COc1cc(C(=O)OC2CCC(N3CCCCC3)CC2)cc(OC)c1OC
c: CC(=O)OC1CC(C)CCC1C(C)C
d: C=CCOCCO
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}