3d model
alcohol
aromatic organic compound
atom
atomic
benzene
benzene ring
camphor tar
chemical
chemical formula
chemical structure
chemistry
chemistry class
chemistry student
coal
compound
double bond
education
electron
element
elements
formula
health
hydrocarbon
hydrogen
isolated
medical
medicine
model
molecular
molecular model
molecular structure
molecule
molecule structure
molecules
naphthalene
naphthalene molecule
naphthalin
naphthaline
organic
polycyclic aromatic hydrocarbon
research
ring
science
structure
substance
symbol
tar camphor
white tar
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