Formula in B2:
=TRIM(MID(SUBSTITUTE(A2,CHAR(10),REPT(" ",999),LEN(A2)-LEN(SUBSTITUTE(A2,CHAR(10),""))-2),999,999))
Formula does assume there's at least 3 lines. If you need more robustness:
=IF(LEN(A2)-LEN(SUBSTITUTE(A2,CHAR(10),""))>=3,
TRIM(MID(SUBSTITUTE(A2,CHAR(10),REPT("...