Task: Please answer the multiple choice question.
Question: Which molecule has the highest acute oral toxicity rat LD50?
Constraint: Even if you are not sure, you must pick either a, b, c, d, or e without using any additional words.
Options:
a Clc1ccc2c(c1)C(N1CCNCC1)=Nc1ccccc1O2
b CCOC(=O)C(O)(c1ccc(Cl)cc1)c1ccc(Cl)cc1
c CC1=NN(c2ccccc2)C(=O)C1C=O
d CCC1(O)CC(OC2CC(N(C)C)C(OC3CC(O)C(OC4CCC(=O)C(C)O4)C(C)O3)C(C)O2)c2c(cc3c(c2O)C(=O)c2c(O)cccc2C3=O)C1C(=O)OC
e O=C(Nc1ccc(Br)cc1)c1cc(Br)cc(Br)c1O
Answer: b
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}