SYSTEMATICS of IUPAC NOMENCLATURE
The following steps should be considered for better clarity. While the names are written with prefix first - all the subsequent prefixes are successively appended onto the left while writing the name.
A. The ring in red is the principal C chain appearing as 3-cyclopentyl propanoate
B. Purple ring is the alkyl part of ester - which would be a prefix to the ester - a cyclopent-1-en-1-yl
C. There are two substituents further present on this chain: a 4-acetyl (purple) and a 5-(1-methyl-tetradecahydro-anthracen-1-yl (green)
D. A further substituent is present with four carbons (pink) - bearing the name but-3-en-1-yl
E. The pink part has further substitutions:
1-deuteromercapto for the -SD group (deuterates thiol group)
4,4,4-trichloro
1-phenyl
2-thio...(with further substitutions of...{shown in blue}):
Phosphoranyl (pentavalent P; with further substitutions of...):
triethoxy
phenoxy ( with 4-nitro)
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