Task: Please answer the following question about the molecule with SMILES O=C1c2c(O)cccc2C(OC2OC(CO)C(O)C(O)C2O)c2cc(CO)cc(O)c21.
Question: Please describe this drug.
Result: Casanthranol appears as light brown or brown powder. (NTP, 1992)
Task: Please answer the following question about the molecule with {SMILES__description} {SMILES#}.
{#Description|Question|Request!}: {quest#}
{#Result|Answer|Completion!}: {answ#}
O=C1c2c(O)cccc2C(OC2OC(CO)C(O)C(O)C2O)c2cc(CO)cc(O)c21
C1=CC2=C(C(=C1)O)C(=O)C3=C(C2OC4C(C(C(C(O4)CO)O)O)O)C=C(C=C3O)CO
1,8-dihydroxy-3-(hydroxymethyl)-10-[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-10H-anthracen-9-one
Please describe this drug.