请将下面的地址规范化：北京市海淀区中关村大街45号，电话：010-12345678，邮箱：info@abcd.com。格式如下：{"地址":"北京市海淀区中关村大街45号","电话":"010-12345678","邮箱":"info@abcd.com"}
user
{"地址":"北京市海淀区中关村大街45号","电话":"010-12345678","邮箱":"info@abcd.com"}
assistant