Sutra Ylang is one of Bois 1920's eight original fragrances. The Bois 1920 website only lists "hesperidic notes", sandalwood, and Texas citron as notes, but a quick search on the internet turns up a list of notes that sounds true to me: top notes of lemon, bergamot, cardamom, and bay laurel; a heart of rose, jasmine, violet, lily of the valley, and carnation; and a base of sandalwood, cedar, moss, and benzoin.