For the Woe see Rev 18:10, and Rev 18:19. For the next clause see Rev 17:4 with the addition here of bussinon (Rev 18:12).
For in one hour so great riches is made desolate (hoti miāi hōrāi ērēmōthē ho tosoutos ploutos). The reason (hoti) for the “woe.” First aorist passive indicative of erēmoō, for which verb see Rev 17:16; Rev 18:19. This is the dirge of the merchants.