1.cstart 2# Ethamivan 3 4R: ring pointing right double 1,2 3,4 5,6 5 bond left from R ; OH 6 bond -150 from R ; OCH3 7 bond right from R ; C 8 double bond up ; O 9 bond right from C ; N 10 bond 45 ; C2H5 11 bond 135 from N ; C2H5 12.cend 13