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, d, or e without using any other words.
Options:
a) C=CCn1c(=O)c2[nH]c(C)nc2n(CCCC)c1=O
b) Cc1nn(C)c(=O)c2noc(C)c12
c) CC(C)Oc1cccc(NC(=O)c2ccccc2C(F)(F)F)c1
d) CCN1CC2CN(C)CC(C1)C2OC(=O)c1ccc(Cl)cc1
e) CC(=O)Nc1ccc(S(=O)(=O)Nc2cc(C)on2)cc1
Answer: a
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}