将Excel中公式变为sas code ，感谢帮忙

=6371004*ACOS(1-(POWER((SIN((90-C2)*PI()/180)*COS(B2*PI()/180)-SIN((90-C3)*PI()/180)*COS(B3*PI()/180)),2)+POWER((SIN((90-C2)*PI()/180)*SIN(B2*PI()/180)-SIN((90-C3)*PI()/180)*SIN(B3*PI()/180)),2)+POWER((COS((90-C2)*PI()/180)-COS((90-C3)*PI()/180)),2))/2)