We will land in Beijing international airport at 1.15am need taxi!

We will land into BCIA terminal 2 at 1.15am, we would like to get a taxi from the airport to our hotel situated in No. 4 of Shijia Hutong, Qianmen Street, Xicheng District, how much would the taxi fare be? I have been Quoted 400RMB by a private taxi driver. Is that reasonable?