reserpine.chem:

.cstart
# Example file for chem:
#   Reserpine or C_33H_40N_2O_9 (CAS-RN: 50-55-5).
#
# Found at https://en.wikipedia.org/wiki/Reserpine
#
# Prepared by Bernd Warken <groff-bernd.warken-72@web.de>,
# reorganized by Norwid Behrnd <nbehrnd@yahoo.com>.

R1:	ring6 double 1,2 3,4 5,6
R2:	flatring5 pointing down with .V2 at R1.V3 put N at 1 double 4,5
R3:	ring6 with .V5 at R2.V5 put N at 3
R4:	ring6 with .V1 at R3.V3 put N at 1  # prevent a struck-through N
R5:	ring6 with .V1 at R4.V3
	frontbond 120 from R5.V3 ; O
	bond 60
BP:	doublebond up ; O
	bond 120 from BP.start
R6:	ring6 double 1,2 3,4 5,6

	bond -120 from R1.V5 ; MeO
	H below R2.N
	frontbond -120 from R3.V4 ; H
	backbond 60 from R4.V3 ; H
	backbond -120 from R4.V4 ; H
	backbond down from R5.V4 ; OMe
	frontbond -120 from R5.V5 ; MeO2C
	bond 060 from R6.V2 ; OMe
	bond 120 from R6.V3 ; OMe
	bond 180 from R6.V4 ; OMe

# Local Variables:
# fill-column: 72
# mode: Nroff
# End:
# vim: set textwidth=72:
.cend