2-(4-(((2,4-diaminopteridin-6-yl)methyl)(methyl)amino)benzamido)-5-(2-(3-(3′,6′-dihydroxy-3-oxo-3H-spiro[isobenzofuran-1,9′-xanthen]-6-yl)thioureido)ethoxy)-5-oxopentanoic acid
Chemical Formula: C43H38N10O10S
Molecular Weight: 886.8970
m/z: 886.2493 (100.0%), 887.2527 (46.5%), 888.2560 (10.6%), 888.2451 (4.5%), 887.2463 (3.7%), 889.2485 (2.1%), 888.2536 (2.1%), 888.2497 (1.7%), 889.2594 (1.6%)
Elemental Analysis: C, 58.23; H, 4.32; N, 15.79; O, 18.04; S, 3.61