Task: Answer the following question about the molecule with SMILES O=P(NCCCl)(NCCCl)O[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H]1O.
Description: Which USAN substem can this drug or clinical candidate name be matched with?
Completion: -fos-; -fosfamide
Task: Answer the following question about the molecule with {SMILES__description} {SMILES#}.
{#Description|Question|Request!}: {quest#}
{#Result|Answer|Completion!}: {answ#}
O=P(NCCCl)(NCCCl)O[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H]1O
O=P(NCCCl)(NCCCl)O[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H]1O
(2S,3R,4S,5S,6R)-2-bis(2-chloroethylamino)phosphoryloxy-6-(hydroxymethyl)oxane-3,4,5-triol
Which USAN substem can this drug or clinical candidate name be matched with?
-fos-; -fosfamide