You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Please write the molecular formula of the molecule methane;methyl 4-[(3aS,5S,6S,6aS)-6'-chloro-6-(3-chloro-2-fluorophenyl)-4-(cyclopropylmethyl)-2'-oxospiro[1,2,3,3a,6,6a-hexahydropyrrolo[3,2-b]pyrrole-5,3'-1H-indole]-2-yl]-3-aminobenzoate .
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C32H33Cl2FN4O3
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