Task: Answer the following question about the molecule with SMILES O=c1[nH]c2cc(Cl)ccc2o1.
Question: Please describe this drug.
Answer: Chlorzoxazone is a member of the class of 1,3-benzoxazoles that is 1,3-benzoxazol-2-ol in which the hydrogen atom at position 5 is substituted by chlorine. A centrally acting muscle relaxant with sedative properties, it is used for the symptomatic treatment of painful muscle spasm. It has a role as a muscle relaxant and a sedative. It is a member of 1,3-benzoxazoles, an organochlorine compound and a heteroaryl hydroxy compound.
Task: Answer the following question about the molecule with {SMILES__description} {SMILES#}.
{#Description|Question|Request!}: {quest#}
{#Result|Answer|Completion!}: {answ#}
O=c1[nH]c2cc(Cl)ccc2o1
C1=CC2=C(C=C1Cl)NC(=O)O2
5-chloro-3H-1,3-benzoxazol-2-one
Please describe this drug.