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Ascomycin.svg validSVG Skeletal formula of ascomycin Orientation made to match Image TacrolimusArmisteadDskeletal by Ben Mills Created using acdlabs html ACD and Inkscape Own work after cite journal Mollison KW Fey TA Gauvin DM et al macrolactam inhibitor of helper type and helper type cytokine biosynthesis for topical treatment