(17Z)-protosta-17(20),24-dien-3beta-ol => (S)-2,3-epoxysqualene
(17z)-protosta-17(20),24-dien-3beta-ol => (s)-2,3-epoxysqualene
(17Z)-protosta-17(20),24-dien-3beta-ol => (S)-2,3-epoxysqualene
(17z)-protosta-17(20),24-dien-3beta-ol => (s)-2,3-epoxysqualene