1.cstart 2# This is a structure of morphine, for comparison with the one 3# in the preprint by Broadbent and Norris 4# 5R1: ring6 double 1,2 6 bond -60 from R1.V6 ; HO 7R2: ring6 with .V1 at R1.V3 8 bond 60 from R2.V2 ; N 9 bond right from N ; CH3 10R3: benzene with .V1 at R2.V5 11 bond -120 from R3.V5 ; HO 12# this is the furan ring 13 bond -135 length .3 from R1.V5 ; O 14 bond -45 length .3 from R3.V6 15# this is the odd ring 16 bond up length .1 from N ; BP 17B1: bond up length .35 from R1.V4 18 bond to BP 19.cend 20