Rotten, meanwhile, suffering from flu and coughing up blood, felt increasingly isolated from Cook and Jones, and disgusted by Vicious. On 14 January 1978, during the tour's final date at the Winterland Ballroom in San Francisco, a disillusioned Rotten introduced the band's encore saying, "You'll get one number and one number only 'cause I'm a lazy bastard." That one number was a Stooges cover, "No Fun". At the end of the song, Rotten, kneeling on the stage, chanted an unambiguous declaration, "This is no fun. No fun. This is no fun—at all. No fun." As the final cymbal crash died away, Rotten addressed the audience directly—"Ah-ha-ha. Ever get the feeling you've been cheated? Good night"—before throwing down his microphone and walking offstage. He later observed, "I felt cheated, and I wasn't going on with it any longer; it was a ridiculous farce. Sid was completely out of his brains—just a waste of space. The whole thing was a joke at that point.... [Malcolm] wouldn't speak to me.... He would not discuss anything with me. But then he would turn around and tell Paul and Steve that the tension was all my fault because I wouldn't agree to anything."On 17 January, the band split, making their ways separately to Los Angeles. McLaren, Cook and Jones prepared to fly to Rio de Janeiro for a working vacation. Vicious, in increasingly bad shape, was taken to Los Angeles by a friend, who then brought him to New York, where he was immediately hospitalised. Rotten flew to New York, where he announced the band's break-up in a newspaper interview on 18 January. Virtually broke, he telephoned the head of Virgin Records, Richard Branson, who agreed to pay for his flight back to London, via Jamaica. In Jamaica, Branson met with members of the band Devo, and tried to install Rotten as their lead singer. Devo declined the offer, which Rotten also found unappealing.Cook, Jones and Vicious never performed together again live after Rotten's departure. Over the next several months, McLaren arranged for recordings in Brazil (with Jones and Cook), Paris (with Vicious) and London; each of the three and others stepped in as lead vocalists on tracks that in some cases were far from what punk was expected to sound like. These recordings were to make up the musical soundtrack for the reconceived Pistols feature film project, directed by Julien Temple, to which McLaren was now devoting himself. On 30 June, a single credited to the Sex Pistols was released: on one side, notorious criminal Ronnie Biggs sang "No One Is Innocent" accompanied by Jones and Cook; on the other, Vicious sang the classic "My Way", over both a Jones–Cook backing track and a string orchestra. The single reached number seven on the charts, eventually outselling all the singles with which Rotten was involved. McLaren was seeking to reconstitute the band with a permanent new frontman, but Vicious—McLaren's first choice—had sickened of him. In return for agreeing to record "My Way", Vicious had demanded that McLaren sign a sheet of paper declaring that he was no longer Vicious's manager. In August, Vicious, back in London, delivered his final performances as a nominal Sex Pistol: recording and filming cover versions of two Eddie Cochran songs. The bassist's return to New York in September put paid to McLaren's dreaming.

Question: What is the full name of the band that split on 17 January?
Answer: Sex Pistols