Task: Please answer the following question about the molecule with SMILES O=CNc1cc([C@@H](O)CNCCc2ccc(NC[C@H](O)c3ccccc3)cc2)ccc1O.
Description: What is the definition of this compound's USAN stem?
Completion: bronchodilators (phenethylamine derivatives)
Task: Please answer the following question about the molecule with {SMILES__description} {SMILES#}.
{#Description|Question|Request!}: {quest#}
{#Result|Answer|Completion!}: {answ#}
O=CNc1cc([C@@H](O)CNCCc2ccc(NC[C@H](O)c3ccccc3)cc2)ccc1O
O=CNc1cc([C@@H](O)CNCCc2ccc(NC[C@H](O)c3ccccc3)cc2)ccc1O
N-[2-hydroxy-5-[(1R)-1-hydroxy-2-[2-[4-[[(2R)-2-hydroxy-2-phenylethyl]amino]phenyl]ethylamino]ethyl]phenyl]formamide
What is the definition of this compound's USAN stem?
bronchodilators (phenethylamine derivatives)