cholesterol.chem:
.cstart

# Example file for chem:
#   cholesterol or C27_H46_O or
#   cholest-5-en-3β-ol (CAS-RN 57-88-5)

# Ring names as in rule 3S-1.1 of IUPAC recommendations 1989 (see for
# instance https://iupac.qmul.ac.uk/steroid/3S01.html)

A:	ring6
B:	ring6 with .V5 at A.V3 double 4,5
C:	ring6 with .V5 at B.V1
D:	ring5 pointing right with .V4 at C.V2

	front bond up at A.V2
	front bond -120 at A.V5 ; HO
	back bond down at B.V1 ; H
	front bond up at B.V2 ; H
	front bond up at C.V2
	back bond down at C.V3 ; H
	back bond 60 at D.V5 ; H
	bond up at D.V5
B1:	back bond -60
	bond 60 at B1.start
	bond 120
	bond 60
	bond 120
B2:	bond 60
	bond down at B2.start

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# fill-column: 72
# mode: Nroff
# End:
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.cend