normetanephrine - Robuta Search

https://webbook.nist.gov/cgi/inchi/InChI%3D1S/C18H37NO3Si3/c1-20-17-13-15(11-12-16(17)21-24(5%2C6)7)18(22-25(8%2C9)10)14-19-23(2%2C3)4/h11-13%2C18-19H%2C14H2%2C1-10H3 Normetanephrine, 3TMS derivative derivative