How can I know my node address for --reserved-nodes

[Kevin_Li]

I have one node synced, I want to use --reserved-nodes option to sync another nodes, however, I realized the node address is not an ip address, but something like:
/ip4/76.222.xxx.xxx/tcp/30333/p2p/12D3KooWJ2x17xJEUaKi6xxxxxxxxxxxxxxxx

How could I know the string after p2p/ for my synced node please?

[Dmitry_Karpushkin]

When a node starts, this information is displayed in the terminal