. "periwinkle plant derivative"^^ . "0"^^ . . . "103108905"@en-us . "periwinkle plant derivative"@en-us . . "103917455"^^ . . "an antineoplastic drug used to treat some forms of cancer"@en-us . . "03917455-n"^^ . . "103769691"@en-us . . "0"^^ . . .