B1单元格写入公式
=IF(5-COLUMN(A1),MID($A1,FIND("#",SUBSTITUTE($A1,".","#",LEN($A1)-LEN(SUBSTITUTE($A1,".",))-5+COLUMN(A1)))+1,FIND("#",SUBSTITUTE($A1,".","#",LEN($A1)-LEN(SUBSTITUTE($A1,".",))-4+COLUMN(A1)))-1-FIND("#",SUBSTITUTE($A1,".","#",LEN($A1)-LEN(SUBSTITUTE($A1,".",))-5+COLUMN(A1)))),"")
右拉复制公式
如果A1单元格的文本内容本身含有"#"号,则把公式中的"#",换成A1单元格文本内容中没有的任意其他符号,如"★"或"●"等等