1 5TN (2e)-3-[4-hydroxy-3-(5,5,8,8-tetramethyl-3-propoxy-5,6,7,8-tetrahydronaphthalen-2-yl)phenyl]acrylic acid 1.000 2 4TN (2e)-3-[3-(3-ethoxy-5,5,8,8-tetramethyl-5,6,7,8-tetrahydronaphthalen-2-yl)-4-hydroxyphenyl]acrylic acid 0.967 3 3TN (2e)-3-[4-hydroxy-3-(3-methoxy-5,5,8,8-tetramethyl-5,6,7,8-tetrahydronaphthalen-2-yl)phenyl]acrylic acid 0.933 4 2E3 (2e)-3-[4-hydroxy-3-(3,5,5,8,8-pentamethyl-5,6,7,8-tetrahydronaphthalen-2-yl)phenyl]prop-2-enoic acid 0.839