You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(3,4-dichlorophenyl)-6-methoxy-7-[(3-phenyl-1,2-oxazol-5-yl)methoxy]quinazolin-4-amine is the IUPAC name of a molecule. Please give its molecular formula.
user
C25H18Cl2N4O3
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