7'-BEnzyl-6'-methyl-3',4'-dihydro-8'h-spiro[cyclohexane-1,2'-pyrano[3,2-g]chromene]-8'-thione 1g

7'-BEnzyl-6'-methyl-3',4'-dihydro-8'h-spiro[cyclohexane-1,2'-pyrano[3,2-g]chromene]-8'-thione 1g