compound 5,10-methylene-5,6,7,8-tetrahydromethanopterin 5,10-methylene-THMPT InChI=1S/C31H45N6O16P/c1-13-22-14(2)36(12-37(22)23-27(33-13)34-31(32)35-28(23)45)16-5-3-15(4-6-16)9-17(38)24(42)18(39)10-50-30-26(44)25(43)20(52-30)11-51-54(48,49)53-19(29(46)47)7-8-21(40)41/h3-6,13-14,17-20,22,24-26,30,38-39,42-44H,7-12H2,1-2H3,(H,40,41)(H,46,47)(H,48,49)(H4,32,33,34,35,45)/t13-,14+,17-,18+,19-,20+,22+,24-,25+,26+,30-/m0/s1 CHEBI:16568 5,10-methylene-H(4)MPT KEGG:C04377 UPa:UPC04377 C31H45N6O16P compound