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, d, or e without using any additional words.
Options:
a. Clc1cc2oc3c(Cl)c(Cl)c(Cl)cc3c2cc1Cl
b. CC(CN=Cc1ccccc1O)N=Cc1ccccc1O
c. Nc1ccc(S(=O)(=O)Nc2cnc3ccccc3n2)cc1
d. CCCCOP(OCCCC)OCCCC
e. O=C(O)Cc1sc(-c2ccccc2)nc1-c1ccc(Cl)cc1
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}