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, d, or e without using any additional words.
Options:
a FC(F)(F)c1nc2c(Cl)cccc2[nH]1
b Cc1ccc(N=CNSN(Cc2ccccc2)Cc2ccccc2)c(C)c1
c CCO[Si](CCP(=O)(OCC)OCC)(OCC)OCC
d CN1CCN(C2=Nc3cc(Cl)ccc3Nc3ccccc32)CC1
e CC(C(=O)O)c1ccc(-c2ccccc2)c(F)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}