Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity (LD50 in rats)?
Constraint: Even if you are not sure, you must pick either a, b, c, or d without using any other words.
Options:
a. Cc1ccccc1-c1nc2c(N)nc(N)nc2nc1N
b. N=C(NN=Cc1ccc(Cl)cc1)NN=Cc1ccc(Cl)cc1
c. OC(c1ccc(Cl)cc1)(c1cncnc1)c1ccccc1Cl
d. Cc1ccc(N=CN(C)Sc2ccc(Cl)cc2)c(C)c1
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}