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system
Can you give the molecular formula of the molecule 1,5-dimethylnaphthalene;1,7-dimethylnaphthalene;1,8-dimethylnaphthalene;1,10-dimethylperylene;3,4-dimethylperylene;3,9-dimethylperylene;3,10-dimethylperylene;1,2-dimethylphenanthrene;1,7-dimethylphenanthrene;2,6-dimethylphenanthrene;2,7-dimethylphenanthrene;2,9-dimethylphenanthrene;2,10-dimethylphenanthrene;1,2,4-trimethylbenzene;1,2-xylene;1,3-xylene ?
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C245H216
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