You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
acetylene;but-2-yne;3,6-diethyl-1-methylphosphanyl-1,3,5-triazine-2,4-dione;3,6-diethyl-5H-pyrimidine-2,4-dione;dimethylphosphane;1-ethyl-3-[1-(ethylcarbamoylamino)propylidene]urea;hexa-1,3,5-triyne;iodomethane;isocyanatoethane;methane;penta-1,3-diyne;propanimidamide;prop-1-yne The above is the IUPAC name of a molecule. Write its molecular formula.
user
C63H103IN15O9P3
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