Bangkok Address Query

Was given the following address to send an old mobile phone to a Thai Friend.

kanapattana 4

soi 7 Angnatong Rd Klangtoey

bangkok thailand 10110

Any idea if this exists?

I am guessing Klangtoey is Khlong Toei

and

Angnatong Rd is possibly At Narong Rd

Any thoughts would be appreciated

Thanks

ps I take it this is a slum area? Would this be safe to visit?